@article{CMUC_1991__32_4_a16,
     author = {Linhartov\'a, Petra},
     title = {Extremal solutions of a general marginal problem},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {743--748},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {1991},
     mrnumber = {1159821},
     zbl = {0751.60006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1991__32_4_a16/}
}