CONCISE APPROACH TOWARD TETRAZOLO[1,5-A ][1,4]BENZODIAZEPINES VIA A NOVEL MULTICOMPONENT ISOCYANIDE-BASED CONDENSATION Article Borisov R.S., Polyakov A.I., Medvedeva L.A., Khrustalev V.N., Guranova N.I., Voskressensky L.G. Organic Letters. Vol. 12. 2010. P. 3894-3897