Ladygin, P., A. Mansurov, and D. Ruder. “COMPARISON OF THE FEATURE VECTOR’S OF AUDIO FILES OBTAINED WITH THE USE OF CHROMATOGRAMS AND THE PITCHTRACKER CREPE”. ПРОБЛЕМЫ ПРАВОВОЙ И ТЕХНИЧЕСКОЙ ЗАЩИТЫ ИНФОРМАЦИИ, no. 8, Nov. 2023, pp. 29-34, http://journal.asu.ru/ptzi/article/view/13932.