%0 Journal Article %A Giko Ikegami %T Singular perturbations in foliations. %J Inventiones mathematicae %D 1989 %P 215-246 %V 95 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1989__95_3_143651/ %F IM_1989__95_3_143651