SYNTHESIS OF 1-TETRAZOLYL-SUBSTITUTED 2,3,4,9-TETRAHYDRO-1H-Β-CARBOLINES AND THEIR TRANSFORMATIONS INVOLVING ACTIVATED ALKYNES ArticleVosskresensky L.G., Titov A.A., Samavati R., Kobzev M.S., Dorovatovskii P.V., Khrustalev V.N., Hong H.C., Thi T.A.D., Van T.N., Sorokina E.A., Varlamov A.V.Chemistry of Heterocyclic Compounds. Том 53. 2017. С. 575-581