Battaglia, G., M. Bellafiore, T. Guglielmo, G. Caramazza, A. Paoli, A. Bianco, and A. Palma. “Evaluation of Thoracic ROM in Elderly Women After a Specific Flexibility-Training Program”. Italian Journal of Anatomy and Embryology, vol. 118, no. 2, Jan. 2014, p. 21, https://oajournals.fupress.net/index.php/ijae/article/view/3414.