Akhtar, Faheem Nake, et al. “COMPARISON OF CLINICAL FAILURES OF LINGUAL RETAINERS BONDED WITH PRIMERLESS FLOWABLE ADHESIVES VERSUS CONVENTIONAL BONDING ADHESIVES”. Pakistan Armed Forces Medical Journal, vol. 71, no. 2, Apr. 2021, pp. 681-85, doi:10.51253/pafmj.v71i2.3575.