Zagnitko Kateryna Mykolayivna. Gregorian Chant in the Contemporary Scholar Discourse: history, theory, performance practice: history, theory, implementation : к.мист. : spec.. 17.00.03 - Музичне мистецтво : presented. 2017-04-28; popup.evolution: .; Mykola Lysenko Lviv National Music Academy. The Problematic Scientific Research Laboratory of Music Etnology. – , 0417U001931.

Updated: 2026-10-20