%0 Journal Article %A Mackenzie, K. %T Drinfel’d doubles and Ehresmann doubles for Lie algebroids and Lie bialgebroids %J Electronic research announcements of the American Mathematical Society %D 1998 %P 74-87 %V 04 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-98-00050-X/ %R 10.1090/S1079-6762-98-00050-X %F ERAAMS_1998_04_a10