R. M. Al-Shamaa, M. N. Chakmakchi, and K. A. Thiab, “An In vitro Comparative Study to Evaluate The Apical Seal of Root Canals Prepared by Rotary Versus Reciprocating Wave-One Nickel Titanium System”, Al-Rafidain Dent J , vol. 14, no. 2, pp. 288–293, Dec. 2014.