Wrzeciono, Piotr. “A Method of Detecting the C4 Violin Mode in the Energy Spectra of Chromatic Scales”. Archives of Acoustics 32, no. 4(S) (January 31, 2007): 197–201. Accessed March 4, 2026. https://acoustics.ippt.gov.pl/index.php/aa/article/view/1410.