Valery Dimitrievich Shikshin (Валерий Дмитриевич Шикшин, born 22 July 1948) Famous russian Go trainer.
He also wrote the "Theory and Practice" series which comprises:
1. The Theory and Practice of Tsumego
3. The Theory and Practice of Shapes
All 4 books were translated from Russian into English.
Interview (in Russian): http://rusgo.org/interview_valerij_shikshin