Gravitational Microlensing Influence on X-ray Radiation from Accretion   Disk of Active Galaxies
  Gravitational microlensing is a very useful tool for investigating the innermost part of lensed quasars, especially for studying a relativistic accretion disk around a massive black hole (BH) supposed to exist in a quasar's center. Here we present a short overview of our recent investigations in this field. 
Predrag Jovanovic