@article{10_37236_2573,
     author = {Josep Conde and Joan Gimbert and Josep Gonz\'alez and Josep M. Miret and Ramiro Moreno},
     title = {Nonexistence of almost {Moore} digraphs of diameter four},
     journal = {The electronic journal of combinatorics},
     year = {2013},
     volume = {20},
     number = {1},
     doi = {10.37236/2573},
     zbl = {1266.05042},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2573/}
}