R. Ahmed, N., نايف, S. N. Lottfi, and صهيب. “High Performance Liquid Chromatographic Method for Determination of Sildenafil Citrate (Viagra) in Pharmaceutical Formulation and Industrial Effluent Sample”. Rafidain Journal of Science, vol. 24, no. 9, June 2025, pp. 24-31, doi:10.33899/rjs.2013.78756.