Nadia, L., M. A. Wirakartakusumah, N. Andarwulan, E. H. Purnomo, T. Noda, and K. Ishiguro. “Chemical Characterization of Flour Fractions from Five Yam (Dioscorea Alata) Cultivars in Indonesia”. Journal of Engineering and Technological Sciences, vol. 47, no. 1, Feb. 2015, pp. 92-103, doi:10.5614/j.eng.technol.sci.2015.47.1.7.