@article{TRSPY_1985_167_a11,
     author = {A. F. Leont'ev},
     title = {Conditions for the representability of functions in convex domains by generalized series of exponentials},
     journal = {Informatics and Automation},
     pages = {216--235},
     publisher = {mathdoc},
     volume = {167},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1985_167_a11/}
}