@article{DAN_1961_136_2_a1,
     author = {G. V. Badalyan},
     title = {Condition for the expansion of functions into a quasi-power series outside of the fundamental interval},
     journal = {Doklady Akademii Nauk},
     pages = {269--271},
     publisher = {mathdoc},
     volume = {136},
     number = {2},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_136_2_a1/}
}