Y. VYSHPINSKA, “PROBLEMS OF TEACHING MUSIC-THEORETICAL DISCIPLINES IN MUSIC EDUCATION IN BUKOVINA IN THE SECOND HALF OF THE 19ᵗʰ CENTURY: BASED ON THE TEXTBOOKS AND SONG COLLECTIONS BY SYDIR (ISIDOR) VOROBKEVYCH”, Studia UBB Musica, vol. 71, no. 1, pp. 63–86, Jun. 2026.