%0 Journal Article %A V. V. Zharinov %T Binary relations, B\"acklund transformations, and wave packet propagation %J Teoretičeskaâ i matematičeskaâ fizika %D 2020 %P 3-22 %V 205 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2020_205_1_a0/ %G ru %F TMF_2020_205_1_a0