Wasu Amaritsut, Juangjun Duangpatra, and Tiamjai Komkris, “Anatomy and Development of Khon Kaen 60-3, Kaset 1 and Tainan 9 Peanut Seed Coat”, Agr. Nat. Resour., vol. 28, no. 3, pp. 324–332, Sep. 1994.