@article{MAN_1959__138_160722,
     author = {U. Christian},
     title = {\"Uber die {Multiplikatorensysteme} zur {Gruppe} der ganzen {Modulsubstitutionen} n-ten {Grades.}},
     journal = {Mathematische Annalen},
     pages = {363--397},
     publisher = {mathdoc},
     volume = {138},
     year = {1959},
     zbl = {0092.30001},
     url = {http://geodesic.mathdoc.fr/item/MAN_1959__138_160722/}
}