@article{DAN_1974_217_6_a4,
     author = {I. I. Ibragimov and N. I. Nagnibida},
     title = {On the completeness of a system of functions on a curve},
     journal = {Doklady Akademii Nauk},
     pages = {1256--1258},
     year = {1974},
     volume = {217},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_217_6_a4/}
}