As 4th years, you must be getting more course material related to the scientific literature. Also, references my be found on the internet as web links and also scientific papers. So, how are you managing this info? Just bookmarks in a browser, or something more sophisticated?

Have you tried:
1) connotea www.connotea.org/
Free online reference management for all researchers, clinicians and scientists.

2) Del.icio.us http://del.icio.us/
del.icio.us is a social bookmarking website -- the primary use of del.icio.us is to store your bookmarks online, which allows you to access the same bookmarks from any computer and add bookmarks from anywhere, too. On del.icio.us, you can use tags to organize and remember your bookmarks, which is a much more flexible system than folders.

3) Zotero http://www.zotero.org/
Zotero [zoh-TAIR-oh] is a free, easy-to-use Firefox extension to help you collect, manage, and cite your research sources. It lives right where you do your work — in the web browser itself.

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