1. 1) S. Tawata and S. Yaga: Report of the Appropriate Technology for Processing and Utilization of Ipil-ipil for Leaf Meal Forage, Japan International Cooperation Agency, pp 9–57, 1986.
2. 3) S. Tawata: Jpn. Kokai Tokkyo Koho JP 63294746 (1988) (in Japanese).