A. Njidda and A. Nasiru, “In vitro Gas Production and Dry Matter Digestibility of Tannin-Containing Forges of Semi-Arid Region of North-Eastern Nigeria”, Pak. J. Nutr., vol. 9, no. 1, pp. 60–66, Dec. 2009, doi: 10.3923/pjn.2010.60.66.