Mariia Korepanova. Improvisation and Variation in Traditional and Stage Performances of Besermyan Krez`: Analysis of Sources and Creative Reconstruction.
Estonian Academy of Music and Theatre. Studies on Artistic Research 3.
Summary of the doctoral thesis in Estonian on pages 116-121 and in English on pages 122-127. Read more here
Estonian Academy of Music and Theatre Press, 2021, 978-9949-7380-5-2
