@article{MET_1984__31_175939,
     author = {D. Landers and L. Rogge},
     title = {Natural {a-Quantiles} and {Conditional} {a-Quantlies.}},
     journal = {Metrika},
     pages = {99--113},
     year = {1984},
     volume = {31},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MET_1984__31_175939/}
}