%0 Journal Article %A D. Gabai %A W.H. Kazez %T The classiflcation of maps of surfaces. %J Inventiones mathematicae %D 1987 %P 219-242 %V 90 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1987__90_143508/ %F IM_1987__90_143508