@article{IVM_1981_8_a8,
     author = {A. L. Teptin},
     title = {The difference {Green} function that changes signs only on the lines $x=\mathrm{const}$, $s=\mathrm{const}$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {47--51},
     publisher = {mathdoc},
     number = {8},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1981_8_a8/}
}