@article{DAN_1963_149_3_a2,
     author = {V. D. Golovin},
     title = {On a generalization of the notion of periodic continuation},
     journal = {Doklady Akademii Nauk},
     pages = {502--504},
     publisher = {mathdoc},
     volume = {149},
     number = {3},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_149_3_a2/}
}