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@article{MZM_1979_26_5_a12, author = {A. I. Vasil'ev}, title = {Delta-compactness of an algebraic sum of sets}, journal = {Matemati\v{c}eskie zametki}, pages = {779--784}, publisher = {mathdoc}, volume = {26}, number = {5}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1979_26_5_a12/} }
A. I. Vasil'ev. Delta-compactness of an algebraic sum of sets. Matematičeskie zametki, Tome 26 (1979) no. 5, pp. 779-784. http://geodesic.mathdoc.fr/item/MZM_1979_26_5_a12/