@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/}
}