@article{DAN_1970_192_6_a1,
     author = {A. S. Bratus'},
     title = {A priori estimates for equations with a parameter},
     journal = {Doklady Akademii Nauk},
     pages = {1202--1205},
     publisher = {mathdoc},
     volume = {192},
     number = {6},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_192_6_a1/}
}