@article{10_37236_1623,
     author = {Francesc Comellas and J. Luis A. Yebra},
     title = {New lower bounds for {Heilbronn} numbers},
     journal = {The electronic journal of combinatorics},
     year = {2002},
     volume = {9},
     doi = {10.37236/1623},
     zbl = {1008.52020},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1623/}
}