@article{DvSe17,
	Author = {Z. Dvo\v{r}\'ak and J.-S. Sereni},
	Title = {Do triangle-free planar graphs have an exponential number of 3-colorings?},
	Fjournal = {Electronic Journal of Combinatorics},
	Issn = {1077-8926},
	Journal = {Electron. J. Combin.},
	Mrclass = {05C15 (05C10)},
	Number = {3},
	Pages = {#P3.47},
	Volume = {24},
	Year = {2017}}