Bulletin of the Academy of Sciences of the USSR Division of Chemical Science.
Kluwer Academic Publishers-Plenum Publishers.
Vol. 36.
1987.
P. 2539-2543
Izvestiya Vysshikh Uchebnykh Zavedenii, Seriya Khimiya i Khimicheskaya Tekhnologiya.
Ivanovo State University of Chemistry and Technology.
Vol. 29.
1986.
P. 48-51
Chemistry of Heterocyclic Compounds.
Латвийский институт органического синтеза Латвийской академии наук / Springer New York Consultants Bureau.
Vol. 22.
1986.
P. 57-63