@article{SLC_1990_24_a1,
     author = {Doron Zeilberger},
     title = {Three {Recitations} on {Holonomic} {Systems} and {Hypergeometric} {Series}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {24},
     year = {1990},
     url = {http://geodesic.mathdoc.fr/item/SLC_1990_24_a1/}
}