In a German Newspaper (FAZ) it is said, Mr Sokolov lost recently a "plagiat" trial against another (I guess: Russian?) historian.

https://www.faz.net/aktuell/gesellschaft/kriminalitaet/historiker-wollte-leiche-von-freundin-in-fluss-versenken-16480201.html?printPagedArticle=true#pageIndex_2

Does anyone have further details about this plagiat accusation?

Best regards, Thomas