J. Ng'ambi, D. Norris, and C. Mbajiorgu, “Relationship Between Annual Rainfall Oscillations and Mohair Production in Lesotho Between 1935 and 1996”, Pak. J. Nutr., vol. 8, no. 4, pp. 483–486, Mar. 2009, doi: 10.3923/pjn.2009.483.486.