BIORESOURCE TECHNOLOGY, vol. 99, no. 18, page. 8810 - 8818, 2008-12
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 33, no. 19, page. 5176 - 5183, 2008-10
BIORESOURCE TECHNOLOGY, vol. 99, no. 6, page. 2061 - 2066, 2008-04
BIORESOURCE TECHNOLOGY, vol. 99, no. 5, page. 1141 - 1147, 2008-03