@article{ZNSL_1994_218_a14,
     author = {I. N. Yakushina},
     title = {Uniform asymptotic expantions for the solution of {Stueckelberg's} system with turning points},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {197--205},
     year = {1994},
     volume = {218},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1994_218_a14/}
}