@article{10_37236_1463,
     author = {James B. Shearer},
     title = {Improved {LP} lower bounds for difference triangle sets},
     journal = {The electronic journal of combinatorics},
     year = {1999},
     volume = {6},
     doi = {10.37236/1463},
     zbl = {0928.05009},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1463/}
}