Kipkorir, R., S. Muhoho, P. Muliro, B. Mugendi, M. Frohme, and O. Broedel. “Effects of Coffee Processing Technologies on Aroma Profiles and Sensory Quality of Ruiru 11 and SL 28 Kenyan Coffee Varieties”. Asian Journal of Agriculture and Food Sciences, vol. 3, no. 2, Apr. 2015, https://ajouronline.com/index.php/AJAFS/article/view/2551.