@article{CMUC_1995__36_4_a9,
     author = {Kowalski, Zbigniew S.},
     title = {Minimal generators for aperiodic endomorphisms},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {721--725},
     publisher = {mathdoc},
     volume = {36},
     number = {4},
     year = {1995},
     mrnumber = {1378693},
     zbl = {0840.28006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1995__36_4_a9/}
}