On the physical nature of the electromagnetic induced transparency   effect
  The origin of the electromagnetic induced transparency (EIT) effect is explained not as the vanish of atom-field interaction, but as the growing of stimulated emission process due to the efficient four- photon mixing, which allows the atom to return in the initial state. We point out the importance of creation the new mathematical model for description the dynamics of optical transitions, which should be based on the concept of the time invariance violation in electromagnetic interactions. 
V. A. Kuz'menko