%0 Journal Article %A Azarpanah, F. %A Karavan, M. %T On nonregular ideals and $z^\circ$-ideals in $C(X)$ %J Czechoslovak Mathematical Journal %D 2005 %P 397-407 %V 55 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2005__55_2_a9/ %G en %F CMJ_2005__55_2_a9