%0 Journal Article %A Martínez, J. %A Cordero, P. %A Gutiérrez, G. %A Guzmán, I. P. de %T Restricted ideals and the groupability property. Tools for temporal reasoning %J Kybernetika %D 2003 %P [521] %V 39 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_2003__39_5_a2/ %G en %F KYB_2003__39_5_a2