Lakhey, M., R. Ghimire, R. Shrestha, and A. Bhatta. “Correlation of Serum Free Prostate-Specific Antigen Level With Histological Findings in Patients With Prostatic Disease”. Kathmandu University Medical Journal, vol. 8, no. 2, Aug. 2010, pp. 158-63, doi:10.3126/kumj.v8i2.3550.