%0 Journal Article %A M. I. Kabachnik %A V. A. Gilyarov %A M. M. Yusupov %T A contribution to the study of conjugation in systems containing a tetrahedral phosphorus atom. Phosphoazacyanines %J Doklady Akademii Nauk %D 1965 %P 1079-1082 %V 160 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_160_5_a26/ %G ru %F DAN_1965_160_5_a26