Yulian Semyonov
Yulian Semyonovich Semyonov (, ), pen-name of Yulian Semyonovich Lyandres () (October 8, 1931 – September 15, 1993), was a Soviet and Russian novelist, screenwriter and poet. His works were mainly spy fiction and detective fiction. He was born in Moscow. His best known novel was Seventeen Moments of Spring.