Vm. Kolomietz et al., MONOPOLE MODES IN A FINITE FERMI SYSTEM WITH DIFFUSE REFLECTION BOUNDARY-CONDITIONS, Nuclear physics. A, 571(1), 1994, pp. 117-131
At semi-classical response function for a finite system of Fermi parti
cles on which acts a spherical external perturbation is obtained assum
ing a boundary condition with diffuse reflection which takes into acco
unt particle correlation interaction within the nuclear surface region
.