@article{ITA_2008__42_1_5_0,
     author = {C\'egielski, Patrick and Guessarian, Ir\`ene and Matiyasevich, Yuri},
     title = {Tree inclusion problems},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {5--20},
     publisher = {EDP-Sciences},
     volume = {42},
     number = {1},
     year = {2008},
     doi = {10.1051/ita:2007052},
     mrnumber = {2382541},
     zbl = {1149.68040},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ita:2007052/}
}