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@article{MZM_1992_52_6_a0, author = {L. P. Vlasov}, title = {Continuity of the metric projection on convex sets}, journal = {Matemati\v{c}eskie zametki}, pages = {3--9}, publisher = {mathdoc}, volume = {52}, number = {6}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1992_52_6_a0/} }
L. P. Vlasov. Continuity of the metric projection on convex sets. Matematičeskie zametki, Tome 52 (1992) no. 6, pp. 3-9. http://geodesic.mathdoc.fr/item/MZM_1992_52_6_a0/