@article{10_37236_7862,
     author = {Xiaodong Xu and Meilian Liang and Stanis{\l}aw P. Radziszowski},
     title = {Chromatic vertex {Folkman} numbers},
     journal = {The electronic journal of combinatorics},
     year = {2020},
     volume = {27},
     number = {3},
     doi = {10.37236/7862},
     zbl = {1441.05153},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/7862/}
}