1. S. Yamanaka in “Cellulosics Utilization-Research and Rewards in Cellulosics, ” ed. by H. Inagaki and G. O. Phillips, Elsevier Science Publishers Ltd., England, 1989, pp. 175–81.
2. T. Asai, in “Acetic Acid Bacteria Classification and Biochemical Activities, ” ed. by T. Asai, University of Tokyo Press, Tokyo, 1968, pp. 105–121.