@article{SLC_1999-2000_43_a0,
     author = {Robin Chapman},
     title = {On a {Septuple} {Product} {Identity}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {43},
     year = {1999-2000},
     url = {http://geodesic.mathdoc.fr/item/SLC_1999-2000_43_a0/}
}