COMPARATIVE-STUDY OF THE STRUCTURE AND PROPERTIES OF 1-METHYL-7-AZAINDOLE AND 7-METHYL-7H-PYRROLO (2,3-B) PYRIDINE, IN THEIR GROUND-STATES - CATALAN, J; MO, O; PEREZ, P; YANEZ, M; AMATGUERRI, F; (Nouveau Journal De Chimie, 1984)