@article{MET_1960__3_175079,
     author = {G.A. Lienert and O. Ebel},
     title = {Ein {Index} zur numerischen {Bestimmung} der {Niveau-Eigenschaft} eines psychologischen {Tests.}},
     journal = {Metrika},
     pages = {117--127},
     publisher = {mathdoc},
     volume = {3},
     year = {1960},
     zbl = {0089.15702},
     url = {http://geodesic.mathdoc.fr/item/MET_1960__3_175079/}
}