@article{SLC_2004-2005_51_a7,
     author = {Istv\'an Kov\'acs},
     title = {The {Number} of {Indecomposable} {Schur} {Rings} over a {Cyclic} {2-Group}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {2004-2005},
     volume = {51},
     url = {http://geodesic.mathdoc.fr/item/SLC_2004-2005_51_a7/}
}