%0 Journal Article %A Luca Sabatini %T Estimates of the Laplacian Spectrum and Bounds of Topological Invariants for Riemannian Manifolds with Boundary %J Analele Universităţii "Ovidius" Constanţa Seria Matematică %D 2019 %V XXVII %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ASUO_2019_XXVII_2_a15/ %F ASUO_2019_XXVII_2_a15