International Council for Research in Agroforestry; Kenya Agricultural Research Institute; Hoekstra, D.A.; Wood, P.J.; Sang, F.A.(ICRAF, Nairobi, KE, 1988)
Bangladesh Agricultural Research Institute, Pulses Research Centre; Islam, O.; Sarker, A.; Rahman, A.(Pulses Research Centre, Ishurdi, Pabna, BD, 1988)
Central Research Institute for Food Crops; Universitas Brawidjaya, Centre of Research for Root Crops; Universitas Cenderawsih; Widodo, Y.; Sumarno(Malang Research Institute for Food Crops, Malang, ID, 1990)