Drupal-Bibcite0<style face="normal" font="default" size="100%">Riccati equation and the problem of decoherence II: Symmetry and the solution of the Riccati equation</style><style face="normal" font="default" size="100%">Riccati equation and the problem of decoherence II: Symmetry and the solution of the Riccati equation</style>