@article{ITA_2006__40_4_559_0,
     author = {Carreras, Francesc and Maga\~na, Antonio and Munuera, Carlo},
     title = {The accessibility of an access structure},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {559--567},
     publisher = {EDP-Sciences},
     volume = {40},
     number = {4},
     year = {2006},
     doi = {10.1051/ita:2006040},
     mrnumber = {2277049},
     zbl = {1117.94014},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ita:2006040/}
}