On the error of uniform approximation of functions of two variables by a~sum of functions of one variable
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1979), pp. 70-73.

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     author = {V. N. Trofimov and L. R. Khariton},
     title = {On the error of uniform approximation of functions of two variables by a~sum of functions of one variable},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {70--73},
     publisher = {mathdoc},
     number = {8},
     year = {1979},
     language = {ru},
     url = {https://geodesic-test.mathdoc.fr/item/IVM_1979_8_a9/}
}
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V. N. Trofimov; L. R. Khariton. On the error of uniform approximation of functions of two variables by a~sum of functions of one variable. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1979), pp. 70-73. https://geodesic-test.mathdoc.fr/item/IVM_1979_8_a9/