@article{ITA_2011__45_3_311_0,
     author = {Karhum\"aki, Juhani and Puzynina, Svetlana},
     title = {Locally catenative sequences and {Turtle} graphics},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {311--330},
     publisher = {EDP-Sciences},
     volume = {45},
     number = {3},
     year = {2011},
     doi = {10.1051/ita/2011104},
     mrnumber = {2836492},
     zbl = {1228.68042},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ita/2011104/}
}