Petryk Oleh Olehovych. Ballet company of Lviv Opera and Ballet Theatry in the second half of the ХХth – at the beginning of the ХХІst century: artistic and creative aspect. : Кандидат мистецтвознавства : spec.. 26.00.01 - Теорія та історія культури : presented. 2021-01-29; popup.evolution: .; Vasyl Stefanyk Precarpathian National University, State Higher Educational Institution. – Івано-Франківськ, 0421U100262.

Updated: 2026-10-22