Xanthos, Theodoros, Ioannis Dalivigkas, and Konstantinos A. Ekmektzoglou. 2011. “Anatomic Variations of the Cardiac Valves and Papillary Muscles of the Right Heart”. Italian Journal of Anatomy and Embryology 116 (2):111-26. https://oajournals.fupress.net/index.php/ijae/article/view/1099.