%0 Journal Article %A COUTINHO, S. C. %T NONHOLONOMIC SIMPLE D-MODULES FROM SIMPLE DERIVATIONS %J Glasgow mathematical journal %D 2007 %P 11-21 %V 49 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089507003370/ %R 10.1017/S0017089507003370 %F 10_1017_S0017089507003370