@article{MZM_2006_80_2_a6,
     author = {V. F. Kirichenko and N. N. Dondukova},
     title = {Contactly {Geodesic} {Transformations
}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {209--219},
     publisher = {mathdoc},
     volume = {80},
     number = {2},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2006_80_2_a6/}
}