@article{DAN_1975_220_1_a6,
     author = {L. A. Muravei},
     title = {On the analytic continuation of the {Green} functions of exterior boundary-value problems for the two-dimensional {Helmholtz} equation},
     journal = {Doklady Akademii Nauk},
     pages = {35--37},
     publisher = {mathdoc},
     volume = {220},
     number = {1},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_220_1_a6/}
}