@article{DAN_1965_161_3_a12,
     author = {B. N. Petrov and V. Yu. Rutkovskii},
     title = {The invariance of nonsearching self-adaptive systems with a reference-model},
     journal = {Doklady Akademii Nauk},
     pages = {544--546},
     publisher = {mathdoc},
     volume = {161},
     number = {3},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_161_3_a12/}
}