@article{DAN_1957_112_3_a6,
     author = {V. V. Petrov and G. M. Ulanov},
     title = {The similarity of sliding, vibrational and optimal conditions of motion in servomechanisms},
     journal = {Doklady Akademii Nauk},
     pages = {394--397},
     publisher = {mathdoc},
     volume = {112},
     number = {3},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_112_3_a6/}
}