@article{SM_1974_22_4_a2,
     author = {A. F. Leont'ev},
     title = {On the representation of an analytic function as a~sum of periodic functions},
     journal = {Sbornik. Mathematics},
     pages = {517--534},
     publisher = {mathdoc},
     volume = {22},
     number = {4},
     year = {1974},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1974_22_4_a2/}
}