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@article{IVM_1961_2_a17, author = {M. S. Shneerson}, title = {On zero-divergence mappings of the gradient field of a harmonic function}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {168--178}, publisher = {mathdoc}, number = {2}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1961_2_a17/} }
M. S. Shneerson. On zero-divergence mappings of the gradient field of a harmonic function. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1961), pp. 168-178. http://geodesic.mathdoc.fr/item/IVM_1961_2_a17/