@article{SLC_2018_80B_a57,
     author = {Christophe Cordero},
     title = {Enumerative {Combinatorics} of {Prographs}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {2018},
     volume = {80B},
     url = {http://geodesic.mathdoc.fr/item/SLC_2018_80B_a57/}
}