Savary, P. (1985). "The protympanum". Surgery and Pathology of the Middle Ear. Surgery and Pathology of the Middle Ear: Proceedings of the International Conference on ‘The Postoperative Evaluation in Middle Ear Surgery’ held in Antwerp on June 14–16, 1984 (به انگلیسی). Springer Netherlands. pp. 65–67. doi:10.1007/978-94-009-5002-3_14. ISBN978-94-010-8715-5.
Savary, P. (1985). "The protympanum". Surgery and Pathology of the Middle Ear. Surgery and Pathology of the Middle Ear: Proceedings of the International Conference on ‘The Postoperative Evaluation in Middle Ear Surgery’ held in Antwerp on June 14–16, 1984 (به انگلیسی). Springer Netherlands. pp. 65–67. doi:10.1007/978-94-009-5002-3_14. ISBN978-94-010-8715-5.