Manov-Yuvenskii, V. I.; Petrovskii, K. B.; Lapidus, A. L. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1984 , vol. 33, p. 543 - 545 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1984 , # 3 p. 593 - 595