@article{MET_1976__23_186160,
     author = {L. Sch\"uler and H. Wolff},
     title = {Zur {Sch\"atzung} eines {Dichtefunktionals.}},
     journal = {Metrika},
     pages = {149--154},
     publisher = {mathdoc},
     volume = {23},
     year = {1976},
     zbl = {0332.62033},
     url = {http://geodesic.mathdoc.fr/item/MET_1976__23_186160/}
}