%0 Journal Article %A Yu. B. Gaididei %A È. G. Petrov %T Theory of band and bound states of double triplet excitations in molecular crystals.~II %J Teoretičeskaâ i matematičeskaâ fizika %D 1971 %P 95-105 %V 7 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1971_7_1_a10/ %G ru %F TMF_1971_7_1_a10