  Main properties of isoscalar giant multipole resonances (up to L=3),
including L=0,2 overtones, in medium-mass closed-shell nuclei are described
within the semimicroscopic particle-hole dispersive optical model. Main
properties are characterized by the energy-averaged strength distribution,
projected (one-body) transition density, and probabilities of direct
one-nucleon decay. Calculation results obtained for the parameters of the
mentioned resonances in the 48Ca, 90Zr, and 132Sn nuclei are compared with
available experimental data.
