@article{ZNSL_1988_173_a7,
     author = {A. P. Katchalov and Ya. V. Kurylev},
     title = {Asymptotics of the {Jost-function} for the two-dimensional {Schr\"odinger} operator},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {96--103},
     year = {1988},
     volume = {173},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1988_173_a7/}
}