@article{DAN_1972_203_4_a1,
     author = {A. S. Bratus'},
     title = {Estimates in $L_2$ for pseudodifferential operators with a parameter of principal type and their applications to equations in tube domains},
     journal = {Doklady Akademii Nauk},
     pages = {738--741},
     publisher = {mathdoc},
     volume = {203},
     number = {4},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_203_4_a1/}
}