@article{DM_1991_3_3_a12,
     author = {G. Kilibarda},
     title = {A~new proof of the {Budach~--} {Podkolzin} theorem},
     journal = {Diskretnaya Matematika},
     pages = {135--146},
     publisher = {mathdoc},
     volume = {3},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1991_3_3_a12/}
}