%0 Journal Article %A Semen I. Polukeev %A Vladimir A. Gavrichkov %A Sergey G. Ovchinnikov %T Effects of optical intra-gap transitions on superexchange interaction in La$ _2$CuO$ _4$ with nonequilibrium photoexcited centers %J Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika %D 2018 %P 159-170 %V 11 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JSFU_2018_11_2_a3/ %G en %F JSFU_2018_11_2_a3