@article{DAN_1977_237_3_a5,
     author = {A. L. \v{S}taras},
     title = {Asymptotic integration of weakly nonlinear partial differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {525--528},
     publisher = {mathdoc},
     volume = {237},
     number = {3},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_237_3_a5/}
}