HARAJDA, H., W. MIKIEL, P. GABRYELCZYK, and P. FEDYNIUK. 2014. “Microstructure of Sound: Formants in the Dynamical Spectra of Violin Sounds”. Archives of Acoustics 18 (1): 17-32. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1128.