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@article{IVM_1982_1_a15, author = {A. L. Teptin}, title = {The sign of the {Green} function for a~multipoint difference boundary value problem}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {86--88}, publisher = {mathdoc}, number = {1}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1982_1_a15/} }
A. L. Teptin. The sign of the Green function for a~multipoint difference boundary value problem. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1982), pp. 86-88. http://geodesic.mathdoc.fr/item/IVM_1982_1_a15/