S.S.ArisuthaS.S. i inni, Evaluation of Methane from Sisal Leaf Residue and Palash Leaf Litter, „Journal of The Institution of Engineers (India): Series E”, 2, 2014, s. 105–110, DOI: 10.1007/s40034-014-0045-x, ISSN2250-2483 [dostęp 2016-11-06](ang.).
S.S.ArisuthaS.S. i inni, Evaluation of Methane from Sisal Leaf Residue and Palash Leaf Litter, „Journal of The Institution of Engineers (India): Series E”, 2, 2014, s. 105–110, DOI: 10.1007/s40034-014-0045-x, ISSN2250-2483 [dostęp 2016-11-06](ang.).