@article{JIS_2003__6_3_a5,
     author = {Schlage-Puchta, Jan-Christoph},
     title = {A criterion for non-automaticity of sequences},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {6},
     number = {3},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2003__6_3_a5/}
}