@article{CMUC_1981_22_1_a0,
     author = {Schirotzek, Winfried},
     title = {On {Farkas-type} theorems},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {1--14},
     year = {1981},
     volume = {22},
     number = {1},
     mrnumber = {609932},
     zbl = {0459.47001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1981_22_1_a0/}
}