@article{DAN_1961_140_6_a4,
     author = {N. N. Lebedev and \`E. D. Pergamentseva},
     title = {Integral equations for the periodic solutions of {Whittaker's} equation},
     journal = {Doklady Akademii Nauk},
     pages = {1252--1254},
     publisher = {mathdoc},
     volume = {140},
     number = {6},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_6_a4/}
}