Natalia Hromchenko. The notolinear Irmologions in the church singing art of Dnipro in the 18th – early 20th centuries: codicological, paleographical and musical aspects : Доктор філософії : spec.. 025 - Музичне мистецтво : presented. 2026-06-25; popup.evolution: o; Communal institution of higher education "Dniprov Academy of Music" of the Dnipropetrovsk Regional Council. – Дніпро, 0826U001511.

Updated: 2026-10-21