On Generalizations of the deBruijn - Erdös Theorem

@article{Snevily1994OnGO,
  title={On Generalizations of the deBruijn - Erd{\"o}s Theorem},
  author={Hunter S. Snevily},
  journal={J. Comb. Theory, Ser. A},
  year={1994},
  volume={68},
  pages={232-238}
}