Famous Trainer Mark Dvoretsky Dies At 68 - Chess.com
Mark Dvoretsky's final interview - Part I | ChessBase
Famous Trainer Mark Dvoretsky Dies At 68 - Chess.com
Mark Dvoretsky passes away at 68 | chess24.com
The chess games of Mark Dvoretzky
Chess History - THIS DAY IN CHESS HISTORY: Remembering IM Mark Dvoretsky (Dec. 9, 1947- Sep. 2016) was a Russian chess trainer, renowned chess writer (Secrets of Chess Training, Secrets of Chess
Chess Trainer Mark Dvoretsky Dies At 68 - Confirms Russian Chess Federation