John Paul, J.A. and Karmegam, N. and Daniel, Thilagavathy (2011) Municipal solid waste (MSW) vermicomposting with an epigeic earthworm, Perionyx ceylanensis Mich. Bioresource Technology, 102 (12). pp. 6769-6773. ISSN 09608524

Karmegam, Natchimuthu and Daniel, Thilagavathy (2009) Growth, reproductive biology and life cycle of the vermicomposting earthworm, Perionyx ceylanensis Mich. (Oligochaeta: Megascolecidae). Bioresource Technology, 100 (20). pp. 4790-4796. ISSN 09608524

Karmegam, Natchimuthu and Daniel, Thilagavathy (2009) Investigating efficiency of Lampito mauritii (Kinberg) and Perionyx ceylanensis Michaelsen for vermicomposting of different types of organic substrates. The Environmentalist, 29 (3). pp. 287-300. ISSN 0251-1088