Dimitrakov, J., Ganev, V., Zlatanov, T., Detchev, I., Horvat, A., Kirov, S., Vatchkova, I., & Dimitrakov, D. (1998). PCR studies on the presence of Chlamydia trahomatis in the upper urinary tract of patients with obstructive pyelonephritis. Folia Medica, 40 (3), 24-28.