“Variation in Plasma Luteinising Hormone Levels, Return to Ostrus and Ovulation Rates in Sows on Different Planes of Sorghum Based Rations”. Makerere University Journal of Agricultural & Environmental Sciences, vol. 4, no. 1, Dec. 2001, pp. 49-54, https://doi.org/10.70060/mak-jaes-2001-120.