Hussen, A. ., M. . Tefera, and S. . Asrate. “Gastrointestinal Helminth Parasitesof Clariasgariepinus (catfish) in Lakehawassa, Ethiopia”. Scientific Journal of Animal Science, vol. 1, no. 4, Oct. 2012, pp. 131-6, http://sjournals.com/index.php/sjas/article/view/1109.