@article{MV_1975_27_1_a21,
     author = {B. Rachajsky},
     title = {Sur les transformations de {B\"acklund}},
     journal = {Matemati\v{c}ki vesnik},
     pages = {173 },
     year = {1975},
     volume = {27},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/MV_1975_27_1_a21/}
}