@article{10_37236_5895,
     author = {Ligang Jin and Yingli Kang and Eckhard Steffen},
     title = {Face-degree bounds for planar critical graphs},
     journal = {The electronic journal of combinatorics},
     year = {2016},
     volume = {23},
     number = {3},
     doi = {10.37236/5895},
     zbl = {1344.05052},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/5895/}
}