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@article{TM_1981_158_a16, author = {A. N. Tikhonov}, title = {Approximate functional equations of the first kind}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {197--202}, publisher = {mathdoc}, volume = {158}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1981_158_a16/} }
A. N. Tikhonov. Approximate functional equations of the first kind. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Analytic number theory, mathematical analysis and their applications, Tome 158 (1981), pp. 197-202. http://geodesic.mathdoc.fr/item/TM_1981_158_a16/