@article{CMJ_2000__50_4_a1,
     author = {Jakub{\'\i}kov\'a-Studenovsk\'a, Danica},
     title = {DR-irreducibility of connected monounary algebras with a cycle},
     journal = {Czechoslovak Mathematical Journal},
     pages = {681--698},
     publisher = {mathdoc},
     volume = {50},
     number = {4},
     year = {2000},
     mrnumber = {1792964},
     zbl = {1079.08500},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2000__50_4_a1/}
}