@article{DAN_1972_205_1_a11,
     author = {V. M. Astapenko},
     title = {Construction of and connection between the n-periodic {Green{\textquoteright}s} functions for the {Laplace} and {Helmholtz} equations},
     journal = {Doklady Akademii Nauk},
     pages = {48--51},
     publisher = {mathdoc},
     volume = {205},
     number = {1},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_205_1_a11/}
}