%0 Journal Article %A V. V. Tsegel'nik %T On B\"acklund transformations for some second-order nonlinear differential equations %J Teoretičeskaâ i matematičeskaâ fizika %D 2023 %P 391-403 %V 217 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2023_217_2_a9/ %G ru %F TMF_2023_217_2_a9