@article{MET_1959__2_175064,
     author = {O. Sch\"urz},
     title = {Quality {Control} -  {Enrick,} {N.L.}},
     journal = {Metrika},
     pages = {249--250},
     publisher = {mathdoc},
     volume = {2},
     year = {1959},
     url = {http://geodesic.mathdoc.fr/item/MET_1959__2_175064/}
}