@article{SLC_2017_78B_a68,
     author = {Tim Dwyer and Sergi Elizalde},
     title = {A necessary {Condition} for {c-Wilf} {Equivalence}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {2017},
     volume = {78B},
     url = {http://geodesic.mathdoc.fr/item/SLC_2017_78B_a68/}
}