TY - JOUR AU - V. V. Tsegel'nik TI - On B\"acklund transformations for some second-order nonlinear differential equations JO - Teoretičeskaâ i matematičeskaâ fizika PY - 2023 SP - 391 EP - 403 VL - 217 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_2023_217_2_a9/ LA - ru ID - TMF_2023_217_2_a9 ER -