 Stone said Grigorenko's case confirms some of the accusations that psychiatry in the Soviet Union is sometimes employed as a tool of political repression.In 1981, Pyotr Grigorenko told about his psychiatric examinations and hospitalizations in his memoirs "V Podpolye Mozhno Vstretit Tolko Krys" ("In The Underground One Can Meet Only Rats") translated into English under the title "Memoirs" in 1982.In 1991, a commission, composed of psychiatrists from all over the Soviet Union and led by Modest Kabanov, director of the Bekhterev Psychoneurological Institute in St Petersburg, spent six months reviewing the Grigorenko files, drew up 29 thick volumes of legal proceedings, and reversed the official diagnosis on Grigorenko in October 1991.