@article{10_37236_867,
     author = {Stefaan De Winter and Felix Lazebnik and Jacques Verstra\"ete},
     title = {An extremal characterization of projective planes},
     journal = {The electronic journal of combinatorics},
     year = {2008},
     volume = {15},
     doi = {10.37236/867},
     zbl = {1178.05024},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/867/}
}