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@article{IVM_1985_2_a8, author = {S. Ya. Havinson}, title = {Representation of functions of two variables by the sums $\phi(x)+\psi(y)$}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {66--73}, publisher = {mathdoc}, number = {2}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1985_2_a8/} }
S. Ya. Havinson. Representation of functions of two variables by the sums $\phi(x)+\psi(y)$. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1985), pp. 66-73. http://geodesic.mathdoc.fr/item/IVM_1985_2_a8/