Ferrari, Federico, Marco Medici, and Andrea Zambonini. “Digital Technologies, Motion Recognition and Analysis of Basic Movements for Improving the Teaching of Ballet Dance: The Digital Double of the PASSAY Project ”. img journal 2, no. 3 (February 8, 2021): 442-473. Accessed April 15, 2021. https://img-journal.unibo.it/article/view/12269.