SYNTHESIS AND THE STRUCTURE OF CIS-TRANS-ISOMERS OF POLYMETHYL-SUBSTITUTED AZOMETHINES OF THE 2-AZAFLUORENE SERIES Article PROSTAKOV N.S., PLESHAKOV V.G., FESENKO D.A., GRIGOREV G.V., SEITEMBETOV T.S., GALIULLIN M.A., OBYNOCHNYI A.A., RADZHAN P.K. ZHURNAL ORGANICHESKOI KHIMII. MEZHDUNARODNAYA KNIGA / Санкт-Петербургская издательская фирма "Наука" Академиздатцентра РАН. Vol. 14. 1978. P. 2569-2576