TY - JOUR AU - Čihák, Pavel TI - On an exposed element of a set of doubly stochastic rectangular matrices JO - Commentationes Mathematicae Universitatis Carolinae PY - 1970 SP - 99 EP - 113 VL - 11 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1970__11_1_a7/ LA - en ID - CMUC_1970__11_1_a7 ER -