%0 Journal Article %A Dino J. Lorenzini %T The characteristic polynomial of a monodromy transformation attached to a family of curves. %J Commentarii mathematici Helvetici %D 1993 %P 111-137 %V 68 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1993__68_2_140296/ %F CMH_1993__68_2_140296