@article{10_21136_AM_1976_103628,
     author = {Tammer, Klaus},
     title = {Notwendige und hinreichende {Bedingungen} f\"ur (strenge) {Konvexit\"at,} {Pseudokonvexit\"at} und (strenge) {Quasikonvexit\"at} einer quadratischen {Funktion} bez\"uglich einer konvexen {Menge}},
     journal = {Applications of Mathematics},
     pages = {97--110},
     year = {1976},
     volume = {21},
     number = {2},
     doi = {10.21136/AM.1976.103628},
     mrnumber = {0401165},
     zbl = {0345.90032},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1976.103628/}
}