[JURIST] Lawyers for Russian oil tycoon Mikhail Khodorkovsky [advocacy profile; JURIST news archive] announced Friday that they have filed a second appeal [JURIST report] to overturn Khodorkovsky's conviction on tax evasion and fraud charges [JURIST report]. Khodorkovsky, former head of oil company Yukos, and his business partner Platon Lebedev were sentenced to nine years in prison [JURIST report], though the sentence was reduced to eight [JURIST report] after their first appeal in September. Khodorkovsky's lawyers are asking that the sentence be overturned and the case be closed. Khodorkovsky's defense website has a press release and an overview of the Russian appeals process. MosNews has more.