Shalavi, Susan, Zahed Mohammadi, and Maryam Abdolrazzaghi. 2012. “Root Canal Treatment of Maxillary and Mandibular Three-Rooted Premolars: A Case Report”. Iranian Endodontic Journal 7 (3):161-64. https://doi.org/10.22037/iej.v7i3.2532.