13C NMR SPECTRA OF METHYL- AND NITRO-SUBSTITUTED AZAFLUORENES Статья Golovtsov N.I., Fomichev A.A., Pleshakov V.G., Zvolinskii V.P., Zakharov V.Z., Prostakov N.S. Theoretical and Experimental Chemistry. Kluwer Academic Publishers-Plenum Publishers. Том 18. 1983. С. 336-338
