TY - JOUR AU - E. M. Bronshtein TI - Topological properties of extremal boundaries of convex compact sets in $I^2$ JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1985 SP - 60 EP - 61 VL - 19 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1985_19_1_a7/ LA - ru ID - FAA_1985_19_1_a7 ER -