@article{ITA_2008__42_3_647_0,
     author = {Shur, Arseny M.},
     title = {Comparing complexity functions of a language and its extendable part},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {647--655},
     publisher = {EDP-Sciences},
     volume = {42},
     number = {3},
     year = {2008},
     doi = {10.1051/ita:2008021},
     mrnumber = {2434040},
     zbl = {1149.68055},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ita:2008021/}
}