(en-US) John Edward Davis, The extended alto flute : The history and development of the alto flute, with a study of modern alto flute design and its effect on extended techniques in alto flute repertoire and pedagogical materials (dissertation), The University of Arizona, (lire en ligne).
babelscores.com
Paul Méfano, Hélios (partition), BabelScores, (ISMN979-0-2325-0433-9, lire en ligne).