  The effective interactions formed by neutron rescattering between the nuclei
fixed in nodes of the crystalline lattice of neutron star crusts have been
considered. In the case of two-body resonances in neutron-nucleus subsystems
new neutron resonances of few-body nature come into existence in the overdense
crystal under certain conditions. The energies and widths of new resonances get
additional dependence on the lattice parameters. The effective interactions
result in nonlinear correction to the equation of state determined by the
balance of gravitational, Coulomb and nuclear resonance forces. This leads to
resonant oscillations of density in the accordant layers of crusts that are
accompanied by oscillations of gamma radiation. The phenomena may clarify some
processes connected with few-body neutron resonances in neutron star crusts,
that have influence on the microstructure of pulsar impulses.
