@article{10_37236_2051,
     author = {J. Sawada and A. Williams},
     title = {Efficient oracles for generating binary bubble languages},
     journal = {The electronic journal of combinatorics},
     year = {2012},
     volume = {19},
     number = {1},
     doi = {10.37236/2051},
     zbl = {1362.68304},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2051/}
}