Getachew, G.; H. P. S. Makkar; K. Becker (2002). "Tropical browses: contents of phenolic compounds, in vitro gas production and stoichiometric relationship between short chain fatty acid and in vitro gas production". Journal of Agricultural Science. 139 (3): 341–352. doi:10.1017/S0021859602002393. S2CID84543893.
Getachew, G.; H. P. S. Makkar; K. Becker (2002). "Tropical browses: contents of phenolic compounds, in vitro gas production and stoichiometric relationship between short chain fatty acid and in vitro gas production". Journal of Agricultural Science. 139 (3): 341–352. doi:10.1017/S0021859602002393. S2CID84543893.