STUDY OF TAUTOMERISM IN A SERIES OF MONOAZOPIGMENTS BASED ON 1-PHENYLAZO-2-OXY-3-PHENYLCARBAMOYLNAPHTHALENE T. M. IVANOVA, E. D. SYCHEVA, B. E. ZAITSEV, E. S. LISITSINA, E. I. POLYAKOVA et K. M. DYUMAEVJ. Phys. Colloques, 48 C9 (1987) C9-737-C9-740DOI: https://doi.org/10.1051/jphyscol:19879126