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@article{IVM_1964_6_a21, author = {G. A. Freiman}, title = {Inverse problems in additive number {theory.~IX.} {The} addition of finite {sets.~V}}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {168--178}, publisher = {mathdoc}, number = {6}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1964_6_a21/} }
G. A. Freiman. Inverse problems in additive number theory.~IX. The addition of finite sets.~V. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1964), pp. 168-178. http://geodesic.mathdoc.fr/item/IVM_1964_6_a21/