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@article{IM2_1982_18_2_a2, author = {B. M. Levitan}, title = {Almost periodicity of infinite-zone potentials}, journal = {Izvestiya. Mathematics }, pages = {249--273}, publisher = {mathdoc}, volume = {18}, number = {2}, year = {1982}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1982_18_2_a2/} }
B. M. Levitan. Almost periodicity of infinite-zone potentials. Izvestiya. Mathematics , Tome 18 (1982) no. 2, pp. 249-273. http://geodesic.mathdoc.fr/item/IM2_1982_18_2_a2/