@article{CLTM_1969_1969_1_a6,
     author = {Weber, Werner},
     title = {\"Uber {Permutationen} mit {Wiederholung.}},
     journal = {Collectanea mathematica},
     pages = {152-187},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1969},
     zbl = {0228.05008},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1969_1969_1_a6/}
}