Sharif, M., S. Aslam, I. Khan, A. Rehman, M. Khan, and M. Afzal. “Patterns of Retentive Failures in Dislodged Single Crowns”. Pakistan Armed Forces Medical Journal (PAFMJ), Vol. 72, no. 3, June 2022, pp. 1090-93, doi:10.51253/pafmj.v72i3.7730.