  The nuclear magnetic shielding is considered within the fully relativistic
approach for the ground state of H-, Li-, and B-like ions in the range Z=32-92.
The interelectronic interaction is evaluated to the first order of the
perturbation theory in Li- and B-like ions. The calculations are based on the
finite-field method. The numerical solution of the Dirac equation with the
magnetic-field and hyperfine interactions included within the
dual-kinetic-balance method is employed. The nuclear magnetic shielding
constant is an important ingredient for accurate determination of the nuclear
magnetic moments from the high-precision g-factor measurements.
