@article{SLC_2006-2007_56_a1,
     author = {Carsten Schneider},
     title = {Symbolic {Summation} {Assists} {Combinatorics}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {56},
     year = {2006-2007},
     url = {http://geodesic.mathdoc.fr/item/SLC_2006-2007_56_a1/}
}