@article{DMGAA_2005_25_1_a4,
     author = {Osys, Miros{\l}aw},
     title = {Semigroups defined by automaton extension mapping},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {103--118},
     year = {2005},
     volume = {25},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2005_25_1_a4/}
}