R. Janarthanan, G. Chinta, D. Jesthadi, B. Shanmuganathan, and L. Periyasamy, “EFFECT OF PIPERINE ON GOAT EPIDIDYMAL SPERMATOZOA: AN IN VITRO STUDY”, Asian J Pharm Clin Res, vol. 7, no. 5, pp. 57–61, Nov. 2014.