@article{MET_1972__19_175524,
     author = {N. Schmitz},
     title = {A {Note} on the {Optimality} of {k-Stage} {Tests.}},
     journal = {Metrika},
     pages = {72--75},
     publisher = {mathdoc},
     volume = {19},
     year = {1972},
     zbl = {0181.22103},
     url = {http://geodesic.mathdoc.fr/item/MET_1972__19_175524/}
}