MASS-SPECTROMETRIC STUDY OF 4-AZAFLUORENES ArticleZVOLINSKII V.P., ZAKHAROV P.I., SHEVTSOV V.K., VARLAMOV A.V., PLESHAKOV V.G., VASILYEV G.A., PROSTAKOV N.S.Chemistry of Heterocyclic Compounds / KHIMIYA GETEROTSIKLICHESKIKH SOEDINENII. 1978. P.. 246-250
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