%0 Journal Article %A I. I. Grandberg %A A. N. Kost %T Evaluation of the comparative electronegativity of substituents in aromatic heterocyclic systems by means of potentiometry %J Doklady Akademii Nauk %D 1961 %P 1087-1089 %V 141 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_141_5_a22/ %G ru %F DAN_1961_141_5_a22