Stasiuk, Ihor [Стасюк, Ігор; Stasjuk], b 29 September 1938 in Berezhany, Galicia, d 16 September 2019 in Lviv. Theoretical solid-state physicist. A graduate of Lviv University (1958), he was a professor of physics there and head of the quantum statistics section of the Lviv division of the Institute of Theoretical Physics of the Academy of Sciences of the Ukrainian SSR. His extensive research covers several branches of solid-state theory, in particular the theory of phase transitions, theoretical electro-optics and piezo-optics, and superconductivity.

[This article originally appeared in the Encyclopedia of Ukraine, vol. 5 (1993).]