@article{SLC_1986_14_a3,
     author = {Michael Clausen},
     title = {Kombinatorische {Strukturen} in {Polynomringen}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {1986},
     volume = {14},
     url = {http://geodesic.mathdoc.fr/item/SLC_1986_14_a3/}
}