Tončeva Elena, Tonema - The Theory and the Rhythmic Interpretation of Byzantine Tune

Tončeva Elena, 

«Tonema - The Theory and the Rhythmic Interpretation of Byzantine Tune», Rhythm in Byzantine Chant. Acta of the congress held at Hemen Castle in November 1986, p. 129-140. 

Hernen 1991

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Tončeva Elena, The Bulgarian Liturgical Chant (9th - 19th centuries)

Tončeva Elena, 

«The Bulgarian Liturgical Chant (9th - 19th centuries)», Rhythm in Byzantine Chant. Acta of the congress held at Hemen Castle in November 1986, p. 141-193. 

Hernen 1991

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