%0 Journal Article %A Janusz MierczyƄski %T Three-dimensional cooperative irreducible systems with a first integral %J Colloquium Mathematicum %D 1998 %P 181-190 %V 76 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-76-2-181-190/ %R 10.4064/cm-76-2-181-190 %G en %F 10_4064_cm_76_2_181_190