%0 Journal Article %A P. van Moerbeke %A H.P. McKean %T The Spectrum of Hill's Equation. %J Inventiones mathematicae %D 1975 %P 217-274 %V 30 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1975__30_142350/ %F IM_1975__30_142350