Finally, a second scientific paper is published by the Poirrier-Falisse (a first paper for me):
Poirrier JE., Poirrier L., Leprince P., Maquet P. “Gemvid, an open source, modular, automated activity recording system for rats using digital video“. Journal of Circadian Rhythms 2006, 4:10 (full text, doi)
It is still in a provisional PDF version but already available on the web and Open Access (of course)! Here is my BibTex entry. I will upload source code tonight on the project website.