Bl. Inst. phys. chem. Res. Abstr. Tokyo, , vol. 11, p. 6 Chem. Zentralbl., , vol. 110, # I p. 1183 Rikagaku Kenkyusho Iho, , vol. 17, p. 216,225 Bl.Inst.phys.chem.Res.Abstr.Tokyo, , vol. 11, p. 6 Chem. Zentralbl., , vol. 110, # I p. 1183