special characters in the nodereferenced titles

I have two content types: Classes and Methods for API documentation site. My Class has CCK nodereference field with dropdown list of all methods existing on the site, and where i just assign to the each class methods which are related to this class. Some methods has name (title) as: >> () or <=>. So this characters ">", "<" and may be some others (didn't test all special chars yet) not appearing in the nodereference dropdown list within the Class content type, instead i just see an empty entry there, seems. If I try to name my method like lets say - >> instead of >> then it is displayed correctly in the dropdown list as >> But the name >> for my API method is not correct then, cause it should be >>.
Please, tell me how to fix that behavior?
Thank you for great module!