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@article{IVM_1971_9_a4, author = {B. I. Golubov}, title = {The $p$-variation of functions of two variables}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {40--49}, publisher = {mathdoc}, number = {9}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1971_9_a4/} }
B. I. Golubov. The $p$-variation of functions of two variables. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1971), pp. 40-49. http://geodesic.mathdoc.fr/item/IVM_1971_9_a4/