%0 Journal Article %A Masa-Nori Ishida %T The Irregularities of Hirzebruch's Examples of Surfaces of General Type with c21= 3c2 . %J Mathematische Annalen %D 1983 %P 407-420 %V 262 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1983__262_163714/ %F MAN_1983__262_163714