  Relativistic calculations of the isotope shifts of energy levels in highly
charged Li-like ions are performed. The nuclear recoil (mass shift)
contributions are calculated by merging the perturbative and large-scale
configuration-interaction Dirac-Fock-Sturm (CI-DFS) methods. The nuclear size
(field shift) contributions are evaluated by the CI-DFS method including the
electron-correlation, Breit, and QED corrections. The nuclear deformation and
nuclear polarization corrections to the isotope shifts in Li-like neodymium,
thorium, and uranium are also considered. The results of the calculations are
compared with the theoretical values obtained with other methods.
