TY - JOUR AU - Brigitte Beekmann AU - Hermann Lökes TI - Estimates for the Eigenvalues of Hill's Equation and Applications for the Eigenvalues of the Laplacian on Toroidal Surfaces. JO - Manuscripta mathematica PY - 1990 SP - 295 EP - 308 VL - 68 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MM2_1990__68_2_155528/ ID - MM2_1990__68_2_155528 ER -