Valery Dimitrievich Shikshin (Валерий Дмитриевич Шикшин, born 22 July 1948, died 18 Feb 2020) 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
In 2013 all 4 books were translated from Russian into English by his daughter Svetlana Shikshina and her husband Shaun Cepla.
Interview (in Russian): https://web.archive.org/web/20190401104452/http://rusgo.org/interview_valerij_shikshin/