@article{MZ_1976__148_172351,
     author = {Wilhelm Forst},
     title = {Variationsmindernde {Eigenschaften} eines speziellen {Kreinschen} {Kernes.}},
     journal = {Mathematische Zeitschrift},
     pages = {67--70},
     year = {1976},
     volume = {148},
     zbl = {0319.41019},
     url = {http://geodesic.mathdoc.fr/item/MZ_1976__148_172351/}
}