Alain Riazuelo, an astrophysicist at the Institut d'astrophysique de Paris, participated in many of the online discussions of the Bogdanovs' work. He posted an unpublished version of Grichka Bogdanov's PhD thesis on his personal website, along with his critical analysis. Bogdanov subsequently described this version as "dating from 1991 and too unfinished to be made public". Rather than suing Riazuelo for defamation, Bogdanov filed a criminal complaint of copyright (droit d'auteur) violation against him in May 2011. The police detained and interrogated Riazuelo. He came to trial and was convicted in March 2012. A fine of 2,000 euros the court imposed was suspended, and only one euro of damages was awarded. But in passing judgement the court stated that the scientist had "lacked prudence", given "the fame of the plaintiff".