@article{10_37236_1241,
     author = {Matthew B. Squire},
     title = {Gray codes for {\(A\)-free} strings},
     journal = {The electronic journal of combinatorics},
     year = {1996},
     volume = {3},
     number = {1},
     doi = {10.37236/1241},
     zbl = {0849.94021},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1241/}
}