@conference{brixen2013acoustical, title = {Acoustical Characteristics of Vocal Modes in Singing}, author = {Brixen, Eddy B. and Sadolin, Cathrine and Kjelin, Henrik}, booktitle = {Audio Engineering Society Convention 134}, month = {May}, year = {2013}, url = {https://www.aes.org/e-lib/browse.cfm?elib=16797} }