@article{UZKU_2009_151_4_a8,
     author = {A. K. Rybnikov},
     title = {B\"acklund {Maps} in {View} of the {Theory} of {Connections}},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {93--115},
     publisher = {mathdoc},
     volume = {151},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2009_151_4_a8/}
}