@article{ELMA_1963__18_140759,
     author = {H.P. K\"unzi and W. Oettli},
     title = {Nichtlineare {Programmierung.}},
     journal = {Elemente der Mathematik},
     pages = {1--8},
     publisher = {mathdoc},
     volume = {18},
     year = {1963},
     zbl = {0114.36102},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1963__18_140759/}
}