@article{10_37236_1457,
     author = {Charles J. Colbourn and Jeffrey H. Dinitz and Alexander Rosa},
     title = {Bicoloring {Steiner} triple systems},
     journal = {The electronic journal of combinatorics},
     year = {1999},
     volume = {6},
     doi = {10.37236/1457},
     zbl = {0924.05007},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1457/}
}