Space-Time Variation of Physical Constants and Relativistic Corrections   in Atoms
  Detection of high-redshift absorption in the optical spectra of quasars have provided a powerful tool to measure spatial and temporal variations of physical ``constants'' in the Universe. It is demonstrated that high sensitivity to the variation of the fine structure constant alpha can be obtained from a comparison of the spectra of heavy and light atoms (or molecules). We have performed calculations for the pair FeII and MgII for which accurate quasar and laboratory spectra are available. A possibility of $10^5$ times enhanced effects of the fundamental constants variation suitable for laboratory measurements is also discussed. 
V. A. Dzuba, V. V. Flambaum, J. K. Webb. (School of Physics,   University of New South Wales, Sydney, Australia)