Md. Rafiqul Islam, M. Mahbubul Islam, M. Nuruzzaman, Suraiya Akhtar, Abul Fazal Mollah, Ranjt Kumar Ghosh, A. K. M. Shahadat Hossain and Lutfar Rahman
Journal of Biological Sciences 2 ( 6 ): 358 - 360 , 2002