ON THE CONTRIBUTION OF THE COHERENT RPA MODES TO THE GROUND STATE CORRELATIONS.

RPA ground state correlations from perturbation theory

Particle-hole and particle-particle RPA ground state correlations

Extended RPA with ground-state correlations

STRONG COHERENT RADIATION OF MIXED MODES IN THE NEIGHBORHOOD OF THE CRITICAL VALUE OF EXCITON DECAY

THEORY OF ENERGY TRANSFER PROCESSES IN SOLIDS: MODES, COHERENT– AND NON–MARKOVIAN PROPERTIES

Study of RPA correlations in the intrinsic state using an exactly solvable model