diff --git a/core/modules/views/lib/Drupal/views/ManyToOneHelper.php b/core/modules/views/lib/Drupal/views/ManyToOneHelper.php
index 08c8cd9..b391528 100644
--- a/core/modules/views/lib/Drupal/views/ManyToOneHelper.php
+++ b/core/modules/views/lib/Drupal/views/ManyToOneHelper.php
@@ -125,8 +125,8 @@ public function summaryJoin() {
 
     // shortcuts
     $options = $this->handler->options;
-    $view = &$this->handler->view;
-    $query = &$this->handler->query;
+    $view = $this->handler->view;
+    $query = $this->handler->query;
 
     if (!empty($options['require_value'])) {
       $join->type = 'INNER';
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/HandlerBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/HandlerBase.php
index 763622f..5d267e4 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/HandlerBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/HandlerBase.php
@@ -353,9 +353,7 @@ public function buildGroupByForm(&$form, &$form_state) {
    * There is no need for this function to actually store the data.
    */
   public function submitGroupByForm(&$form, &$form_state) {
-    $item =& $form_state['handler']->options;
-
-    $item['group_type'] = $form_state['values']['options']['group_type'];
+    $form_state['handler']->options['group_type'] = $form_state['values']['options']['group_type'];
   }
 
   /**
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php
index 0b0f992..9d152a0 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php
@@ -430,7 +430,7 @@ public function submitOptionsForm(&$form, &$form_state) {
     }
 
     // Clear out the content of title if it's not enabled.
-    $options =& $form_state['values']['options'];
+    $options = &$form_state['values']['options'];
     if (empty($options['title_enable'])) {
       $options['title'] = '';
     }
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/relationship/GroupwiseMax.php b/core/modules/views/lib/Drupal/views/Plugin/views/relationship/GroupwiseMax.php
index 823af0d..18cd4fd 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/relationship/GroupwiseMax.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/relationship/GroupwiseMax.php
@@ -242,7 +242,7 @@ protected function leftQuery($options) {
 
     // Workaround until http://drupal.org/node/844910 is fixed:
     // Remove all fields from the SELECT except the base id.
-    $fields =& $subquery->getFields();
+    $fields = &$subquery->getFields();
     foreach (array_keys($fields) as $field_name) {
       // The base id for this subquery is stored in our definition.
       if ($field_name != $this->definition['field']) {
@@ -252,7 +252,7 @@ protected function leftQuery($options) {
 
     // Make every alias in the subquery safe within the outer query by
     // appending a namespace to it, '_inner' by default.
-    $tables =& $subquery->getTables();
+    $tables = &$subquery->getTables();
     foreach (array_keys($tables) as $table_name) {
       $tables[$table_name]['alias'] .= $this->subquery_namespace;
       // Namespace the join on every table.
@@ -266,13 +266,13 @@ protected function leftQuery($options) {
       $fields[$field_name]['alias'] .= $this->subquery_namespace;
     }
     // Namespace conditions.
-    $where =& $subquery->conditions();
+    $where = &$subquery->conditions();
     $this->alterSubqueryCondition($subquery, $where);
     // Not sure why, but our sort order clause doesn't have a table.
     // TODO: the call to add_item() above to add the sort handler is probably
     // wrong -- needs attention from someone who understands it.
     // In the meantime, this works, but with a leap of faith...
-    $orders =& $subquery->getOrderBy();
+    $orders = &$subquery->getOrderBy();
     foreach ($orders as $order_key => $order) {
       // But if we're using a whole view, we don't know what we have!
       if ($options['subquery_view']) {
@@ -314,7 +314,7 @@ protected function alterSubqueryCondition(AlterableInterface $query, &$condition
           $condition['field'] = $this->conditionNamespace($condition['field']);
         }
         elseif (is_object($condition['field'])) {
-          $sub_conditions =& $condition['field']->conditions();
+          $sub_conditions = &$condition['field']->conditions();
           $this->alterSubqueryCondition($query, $sub_conditions);
         }
       }
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/wizard/WizardPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/wizard/WizardPluginBase.php
index e000b92..debb036 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/wizard/WizardPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/wizard/WizardPluginBase.php
@@ -510,7 +510,7 @@ public static function getSelected($form_state, $parents, $default_value, $eleme
    *   The display ID (e.g. 'page' or 'block').
    */
   protected function buildFormStyle(array &$form, array &$form_state, $type) {
-    $style_form =& $form['displays'][$type]['options']['style'];
+    $style_form = &$form['displays'][$type]['options']['style'];
     $style = $style_form['style_plugin']['#default_value'];
     $style_plugin = Views::pluginManager('style')->createInstance($style);
     if (isset($style_plugin) && $style_plugin->usesRowPlugin()) {
diff --git a/core/modules/views/lib/Drupal/views/Tests/Handler/FieldWebTest.php b/core/modules/views/lib/Drupal/views/Tests/Handler/FieldWebTest.php
index 6d73636..7bf0e89 100644
--- a/core/modules/views/lib/Drupal/views/Tests/Handler/FieldWebTest.php
+++ b/core/modules/views/lib/Drupal/views/Tests/Handler/FieldWebTest.php
@@ -206,7 +206,7 @@ public function testAlterUrl() {
       // Get the expected start of the path string.
       $base = ($absolute ? $base_url . '/' : base_path()) . $script_path;
       $absolute_string = $absolute ? 'absolute' : NULL;
-      $alter =& $id_field->options['alter'];
+      $alter = &$id_field->options['alter'];
       $alter['path'] = 'node/123';
 
       $expected_result = url('node/123', array('absolute' => $absolute));
diff --git a/core/modules/views/lib/Drupal/views/ViewExecutable.php b/core/modules/views/lib/Drupal/views/ViewExecutable.php
index fe11e11..ad16546 100644
--- a/core/modules/views/lib/Drupal/views/ViewExecutable.php
+++ b/core/modules/views/lib/Drupal/views/ViewExecutable.php
@@ -914,7 +914,7 @@ protected function _buildArguments() {
     // Iterate through each argument and process.
     foreach ($this->argument as $id => $arg) {
       $position++;
-      $argument = &$this->argument[$id];
+      $argument = $this->argument[$id];
 
       if ($argument->broken()) {
         continue;
@@ -2072,15 +2072,6 @@ public function getItem($display_id, $type, $id) {
   }
 
   /**
-   * Sets the build array used by the view.
-   *
-   * @param array $element
-   */
-  public function setElement(&$element) {
-    $this->element =& $element;
-  }
-
-  /**
    * Sets the configuration of a handler instance on a given display.
    *
    * @param string $display_id
diff --git a/core/modules/views/views.module b/core/modules/views/views.module
index f8f9ff5..f62b96a 100644
--- a/core/modules/views/views.module
+++ b/core/modules/views/views.module
@@ -298,7 +298,7 @@ function views_preprocess_comment(&$variables) {
   // The view data is added to the comment in
   // \Drupal\views\Plugin\views\row\EntityRow::preRender().
   if (!empty($variables['comment']->view) && $variables['comment']->view->storage->id()) {
-    $variables['view'] = &$variables['comment']->view;
+    $variables['view'] = $variables['comment']->view;
   }
 }
 
@@ -1371,7 +1371,7 @@ function views_pre_render_views_form_views_form($element) {
 /**
  * Form builder for the exposed widgets form.
  *
- * Be sure that $view and $display are references.
+ * Be sure that $display is a reference.
  */
 function views_exposed_form($form, &$form_state) {
   // Don't show the form when batch operations are in progress.
@@ -1385,7 +1385,7 @@ function views_exposed_form($form, &$form_state) {
   // Make sure that we validate because this form might be submitted
   // multiple times per page.
   $form_state['must_validate'] = TRUE;
-  $view = &$form_state['view'];
+  $view = $form_state['view'];
   $display = &$form_state['display'];
 
   $form_state['input'] = $view->getExposedInput();
@@ -1530,8 +1530,8 @@ function views_exposed_form_cache($views_name, $display_name, $form_output = NUL
  */
 function views_query_views_alter(AlterableInterface $query) {
   $substitutions = $query->getMetaData('views_substitutions');
-  $tables =& $query->getTables();
-  $where =& $query->conditions();
+  $tables = &$query->getTables();
+  $where = &$query->conditions();
 
   // Replaces substitions in tables.
   foreach ($tables as $table_name => $table_metadata) {
@@ -1556,7 +1556,7 @@ function _views_query_tag_alter_condition(AlterableInterface $query, &$condition
         $condition['field'] = str_replace(array_keys($substitutions), array_values($substitutions), $condition['field']);
       }
       elseif (is_object($condition['field'])) {
-        $sub_conditions =& $condition['field']->conditions();
+        $sub_conditions = &$condition['field']->conditions();
         _views_query_tag_alter_condition($query, $sub_conditions, $substitutions);
       }
       // $condition['value'] is a subquery so alter the subquery recursive.
diff --git a/core/modules/views/views.theme.inc b/core/modules/views/views.theme.inc
index 65f8ac4..084b87d 100644
--- a/core/modules/views/views.theme.inc
+++ b/core/modules/views/views.theme.inc
@@ -180,7 +180,7 @@ function template_preprocess_views_view_fields(&$variables) {
     $empty = $field->isValueEmpty($field_output, $field->options['empty_zero']);
     if (empty($field->options['exclude']) && (!$empty || (empty($field->options['hide_empty']) && empty($variables['options']['hide_empty'])))) {
       $object = new stdClass();
-      $object->handler = &$view->field[$id];
+      $object->handler = $view->field[$id];
       $object->inline = !empty($variables['options']['inline'][$id]);
 
       $object->element_type = $object->handler->elementType(TRUE, !$variables['options']['default_field_elements'], $object->inline);
@@ -958,11 +958,10 @@ function template_preprocess_views_view_list(&$variables) {
  *   An associative array containing:
  *   - view: A ViewExecutable object.
  *   - rows: The raw row data.
-*/
+ */
 function template_preprocess_views_view_rss(&$variables) {
-  $view = $variables['view'];
+  $view  = $variables['view'];
   $items = $variables['rows'];
-
   $style = $view->style_plugin;
 
   $config = \Drupal::config('system.site');
diff --git a/core/modules/views_ui/admin.inc b/core/modules/views_ui/admin.inc
index 8631f25..aac0e39 100644
--- a/core/modules/views_ui/admin.inc
+++ b/core/modules/views_ui/admin.inc
@@ -343,7 +343,7 @@ function views_ui_pre_render_move_argument_options($form) {
  * the current display.
  */
 function views_ui_standard_display_dropdown(&$form, &$form_state, $section) {
-  $view = &$form_state['view'];
+  $view = $form_state['view'];
   $display_id = $form_state['display_id'];
   $executable = $view->getExecutable();
   $displays = $executable->displayHandlers;
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/AddItem.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/AddItem.php
index ed6c1e2..b45e113 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/AddItem.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/AddItem.php
@@ -49,7 +49,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $view = &$form_state['view'];
+    $view = $form_state['view'];
     $display_id = $form_state['display_id'];
     $type = $form_state['type'];
 
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Analyze.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Analyze.php
index df8d83c..6214e9b 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Analyze.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Analyze.php
@@ -34,7 +34,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $view = &$form_state['view'];
+    $view = $form_state['view'];
 
     $form['#title'] = $this->t('View analysis');
     $form['#section'] = 'analyze';
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItem.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItem.php
index 6728002..0185bf7 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItem.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItem.php
@@ -51,7 +51,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $view = &$form_state['view'];
+    $view = $form_state['view'];
     $display_id = $form_state['display_id'];
     $type = $form_state['type'];
     $id = $form_state['id'];
@@ -158,7 +158,7 @@ public function buildForm(array $form, array &$form_state) {
 
         // Get form from the handler.
         $handler->buildOptionsForm($form['options'], $form_state);
-        $form_state['handler'] = &$handler;
+        $form_state['handler'] = $handler;
       }
 
       $name = NULL;
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemExtra.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemExtra.php
index f097a26..b36bb75 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemExtra.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemExtra.php
@@ -50,7 +50,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $view = &$form_state['view'];
+    $view = $form_state['view'];
     $display_id = $form_state['display_id'];
     $type = $form_state['type'];
     $id = $form_state['id'];
@@ -81,7 +81,7 @@ public function buildForm(array $form, array &$form_state) {
 
         // Get form from the handler.
         $handler->buildExtraOptionsForm($form['options'], $form_state);
-        $form_state['handler'] = &$handler;
+        $form_state['handler'] = $handler;
       }
 
       $view->getStandardButtons($form, $form_state, 'views_ui_config_item_extra_form');
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemGroup.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemGroup.php
index c4ddbf2..c4f552b 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemGroup.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemGroup.php
@@ -51,7 +51,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $view = &$form_state['view'];
+    $view = $form_state['view'];
     $display_id = $form_state['display_id'];
     $type = $form_state['type'];
     $id = $form_state['id'];
@@ -84,7 +84,7 @@ public function buildForm(array $form, array &$form_state) {
         $form['#title'] = $this->t('Configure aggregation settings for @type %item', array('@type' => $types[$type]['lstitle'], '%item' => $handler->adminLabel()));
 
         $handler->buildGroupByForm($form['options'], $form_state);
-        $form_state['handler'] = &$handler;
+        $form_state['handler'] = $handler;
       }
 
       $view->getStandardButtons($form, $form_state, 'views_ui_config_item_group_form');
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Display.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Display.php
index 9bafab1..5b85f37 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Display.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Display.php
@@ -59,13 +59,12 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $view = &$form_state['view'];
+    $view = $form_state['view'];
     $display_id = $form_state['display_id'];
     $section = $form_state['section'];
 
     $executable = $view->getExecutable();
     $executable->setDisplay($display_id);
-    $display = &$executable->display[$display_id];
 
     // Get form from the handler.
     $form['options'] = array(
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/EditDetails.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/EditDetails.php
index ba41b62..090ed91 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/EditDetails.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/EditDetails.php
@@ -33,7 +33,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $view = &$form_state['view'];
+    $view = $form_state['view'];
 
     $form['#title'] = $this->t('View name and description');
     $form['#section'] = 'details';
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Rearrange.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Rearrange.php
index 6beed55..dff2c6f 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Rearrange.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Rearrange.php
@@ -48,7 +48,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $view = &$form_state['view'];
+    $view = $form_state['view'];
     $display_id = $form_state['display_id'];
     $type = $form_state['type'];
 
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/RearrangeFilter.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/RearrangeFilter.php
index 71b0694..219522e 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/RearrangeFilter.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/RearrangeFilter.php
@@ -34,7 +34,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $view = &$form_state['view'];
+    $view = $form_state['view'];
     $display_id = $form_state['display_id'];
     $type = 'filter';