Das, S. A.; Ravindranath, B. K.; Suresh, V. M.(Department of Social Sciences, Faculty of Arts & Culture, South Eastern University of Sri Lanka, University Park, Oluvil # 32360, Sri Lanka., 2008-11-10)
Das, S. A.; Kimoto, K.; Ravindranath, B. K.(Department of Social Sciences, Faculty of Arts & Culture, South Eastern University of Sri Lanka, University Park, Oluvil # 32360, Sri Lanka., 2008-11-10)