@article{IM2_1969_3_3_a8,
     author = {L. A. Leont'eva},
     title = {On properties of an incomplete system of functions close to powerfunctions},
     journal = {Izvestiya. Mathematics},
     pages = {643--670},
     year = {1969},
     volume = {3},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1969_3_3_a8/}
}