Herbst, C. T.; Ternström, S.; Švec, J. G. (2009). "Investigation of Four Distinct Glottal Configuration in Classical singing - A Pilot Study". Journal of the Acoustical Society of America. 125 (3): 104–109. Bibcode:2009ASAJ..125L.104H. doi:10.1121/1.3057860. PMID19275279.
harvard.edu
ui.adsabs.harvard.edu
Herbst, C. T.; Ternström, S.; Švec, J. G. (2009). "Investigation of Four Distinct Glottal Configuration in Classical singing - A Pilot Study". Journal of the Acoustical Society of America. 125 (3): 104–109. Bibcode:2009ASAJ..125L.104H. doi:10.1121/1.3057860. PMID19275279.
nih.gov
pubmed.ncbi.nlm.nih.gov
Herbst, C. T.; Ternström, S.; Švec, J. G. (2009). "Investigation of Four Distinct Glottal Configuration in Classical singing - A Pilot Study". Journal of the Acoustical Society of America. 125 (3): 104–109. Bibcode:2009ASAJ..125L.104H. doi:10.1121/1.3057860. PMID19275279.