@article{DAN_1972_206_5_a1,
     author = {A. A. Borovkov},
     title = {On estimates in the principle of invariance},
     journal = {Doklady Akademii Nauk},
     pages = {1037--1039},
     publisher = {mathdoc},
     volume = {206},
     number = {5},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_206_5_a1/}
}