STUDY OF THE REARRANGEMENT OF N-METHYL-SUBSTITUTED PYRIDINIUM YLIDES TO INDOLIZINES BY FIELD DESORPTION MASS SPECTROMETRY Статья Poshivalov S.G., Golovatyi V.G., Zvolinskii V.P., Korol' E.N., Kuznetsov V.I., Prostakov N.S. Theoretical and Experimental Chemistry. Kluwer Academic Publishers-Plenum Publishers. Том 17. 1981. С. 103-105
