@article{10_37236_5103,
     author = {Bo Li and Benjamin Lowenstein and Mohamed Omar},
     title = {Low degree {Nullstellensatz} certificates for 3-colorability},
     journal = {The electronic journal of combinatorics},
     year = {2016},
     volume = {23},
     number = {1},
     doi = {10.37236/5103},
     zbl = {1329.05114},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/5103/}
}