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@article{MMO_1970_22_a1, author = {D. P. Mil'man}, title = {Facial characterization of convex sets; extremal elements}, journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva}, pages = {63--126}, publisher = {mathdoc}, volume = {22}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MMO_1970_22_a1/} }
D. P. Mil'man. Facial characterization of convex sets; extremal elements. Trudy Moskovskogo matematičeskogo obŝestva, Trudy Moskovskogo Matematicheskogo Obshchestva, Tome 22 (1970), pp. 63-126. http://geodesic.mathdoc.fr/item/MMO_1970_22_a1/