Rapp; Kornew
Ukrainskii Khimicheskii Zhurnal (Russian Edition), 1957 , vol. 23, p. 637,639
Ukrainskii Khimicheskii Zhurnal (Russian Edition), 1959 , vol. 25, p. 351
Chem.Abstr., 1958 , p. 9979,1960 1368