@article{ZNSL_1981_117_a10,
     author = {Ya. V. Kurylev},
     title = {On the nonlinear analogue of the {WCB} method and the method of the averaged lagrangian},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {162--171},
     year = {1981},
     volume = {117},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_117_a10/}
}