Ordering of publications in e-publish listing

We are developing a site with Drupal-6.3 and e-publish. After adding some publications, we later had to add some more, basically other language versions of the ones already entered.
In the e-publish page they show up in a mad order - nomally the one you enter them in. There is no way to order them - i.e. group the different language versions of what is basically the same publication together.

This could be achieved by assigning a weight to any publication, so that ordering would be done according to weight.