@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/}
}