Praxmarer, Michael. “Different Blowing Techniques for Palaeolithic Aerophones: Animal Calls, Clarinets, and Flutes”. Journal of Music Archaeology 1 (December 4, 2023): 39–57. Accessed April 19, 2025. https://jma.vlg.oeaw.ac.at/index.php/jma/article/view/5.