@article{SLC_2009-2011_61A_a13,
     author = {William G. Faris},
     title = {Combinatorial {Species} and {Feynman} {Diagrams}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {2009-2011},
     volume = {61A},
     url = {http://geodesic.mathdoc.fr/item/SLC_2009-2011_61A_a13/}
}