P. Pongtongkam, P. Ratisoontorn, S. Suputitada, S. Peyachoknagul, L. Ngernsiri, B. Silayoi, P. Rodrangboon, K. Klakhaeng and R. Senghaphan 1994. Induced Mutation in Rice by Tissue Culture I. Agriculture and Natural Resources. 28, 3 (Sep. 1994), 381–389.