@article{ITA_2011__45_4_459_0,
     author = {Szepietowski, Andrzej},
     title = {Closure properties of hyper-minimized automata},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {459--466},
     publisher = {EDP-Sciences},
     volume = {45},
     number = {4},
     year = {2011},
     doi = {10.1051/ita/2011128},
     mrnumber = {2876117},
     zbl = {1232.68087},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ita/2011128/}
}