@article{ZNSL_1971_22_a13,
     author = {E. L. Arenson},
     title = {The closedness of the image of a~convex set},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {171--174},
     publisher = {mathdoc},
     volume = {22},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1971_22_a13/}
}