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@article{MZM_1968_4_5_a8, author = {L. A. Leont'eva}, title = {On the completeness of a~system of functions on a~segment}, journal = {Matemati\v{c}eskie zametki}, pages = {557--568}, publisher = {mathdoc}, volume = {4}, number = {5}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1968_4_5_a8/} }
L. A. Leont'eva. On the completeness of a~system of functions on a~segment. Matematičeskie zametki, Tome 4 (1968) no. 5, pp. 557-568. http://geodesic.mathdoc.fr/item/MZM_1968_4_5_a8/