Anatolij Illarionovič Širšov (Anatoly/Anatolii Illarinovich Shirshov, orig. Анатолий Илларионович Ширшов) was an algebraist working in Novosibirsk (in former Soviet Union).
Анатолий Илларионович Ширшов (к 80-летию со дня рождения), Алгебра и логика, 40:4 (2001), I–IV, pdf
wikipedia ru
L. A. Bokutʹ, I. P. Shestakov, Some results by A. I. Shirshov and his school, Second International Conference on Algebra (Barnaul, 1991), 1–12, Contemp. Math. 184, Amer. Math. Soc. 1995.
A. I. Širšov, Some algorithm problems for Lie algebras (Russian) Sibirsk. Mat. Ž. 3 1962, 292–296, MR0183753