@article{10_37236_4135,
     author = {Zden\v{e}k Dvo\v{r}\'ak and Jean-S\'ebastien Sereni and Jan Volec},
     title = {Fractional coloring of triangle-free planar graphs},
     journal = {The electronic journal of combinatorics},
     year = {2015},
     volume = {22},
     number = {4},
     doi = {10.37236/4135},
     zbl = {1323.05045},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/4135/}
}