Krastev, Bogdan Petrov. “Laser Apicoectomy With ER:YAG and Bone Xenograft Bio-Oss Collagen®. A Case Report”. The Journal of Dentists 2, no. 2 (July 25, 2014): 90–95 . Accessed March 15, 2025. https://savvysciencepublishers.com/index.php/tjd/article/view/627.