Citation: Ag. Ignatenko et Yb. Vysotsky, ELECTRON-STRUCTURE AND PHYSICOCHEMICAL CH ARACTERISTICS OF IMIDAZO[4,5-B]PYRIDINES AND [4,5-C]PYRIDINES AND OF THEIR PROTONATED AND DEPROTONATED FORMS, Himia geterocikliceskih soedinenij, (10), 1994, pp. 1411-1419