S. A. A. Rizvi, I. Ahmad, M. A. Siddiqui, S. Zaheer, and K. Ahmad, “Role of Color Doppler Ultrasonography in Evaluation of Scrotal Swellings: Pattern of Disease in 120 Patients With Review of Literature”, Urol J, vol. 8, no. 1, pp. 60–65, Mar. 2011.