D. M. Njarui, M. Gatheru, E. M. Gichangi, E. M. Nyambati, C. N. Ondiko, and K. W. Ndungu-Magiroi, “Determinants of forage adoption and production niches among smallholder farmers in Kenya”, Af. J Range For Sci, vol. 34, no. 3, pp. 157–166, Nov. 2017.