@article{MET_1976__23_186147,
     author = {H. Strasser},
     title = {A {Note} on {Efficiency.}},
     journal = {Metrika},
     pages = {91--100},
     publisher = {mathdoc},
     volume = {23},
     year = {1976},
     zbl = {0345.62019},
     url = {http://geodesic.mathdoc.fr/item/MET_1976__23_186147/}
}