%0 Journal Article %A Jakubíková-Studenovská, Danica %T Two types of retract irreducibility of connected monounary algebras %J Mathematica Bohemica %D 1996 %P 143-150 %V 121 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.1996.126097/ %R 10.21136/MB.1996.126097 %G en %F 10_21136_MB_1996_126097