@article{ZNSL_1968_9_a7,
     author = {B. G. Nikolaev},
     title = {Application of the {Laplace} method to the construction of solutions of the {Helmholtz} equation},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {144--167},
     publisher = {mathdoc},
     volume = {9},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1968_9_a7/}
}