@article{NUMA_1968__11_131821,
     author = {W. KRABS},
     title = {Lineare {Optimierung} in halbgeordneten {Vektorr\"aumen.}},
     journal = {Numerische Mathematik},
     pages = {220--231},
     publisher = {mathdoc},
     volume = {11},
     year = {1968},
     zbl = {0262.90034},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1968__11_131821/}
}