Pattamon Sangin, Amara Thongpan, Anders J. Lindstrom, and Mingkwan Mingmuang, “Molecular Identification of Cycas by Restriction Fragment Length Polymorphism (RFLP) and Random Amplified Polymorphic DNA (RAPD)”, Agr. Nat. Resour., vol. 40, no. 1, pp. 107–120, Feb. 2006.