Dawood, Zainab M, and Manhal A Majeed. “An Evaluation of the Efficacy of Different Gingival Retraction Materials on the Gingival Tissue Displacement (A Comparative In Vivo Study) ”. Journal of Baghdad College of Dentistry, vol. 27, no. 4, Dec. 2015, pp. 25-31, https://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/946.