General definition of “conserved quantities” in general relativity and other theories of gravity RM Wald, A Zoupas Physical Review D 61 (8), 084027, 2000 | 604 | 2000 |

Quantum state diffusion, density matrix diagonalization, and decoherent histories: A model J Halliwell, A Zoupas Physical Review D 52 (12), 7294, 1995 | 146 | 1995 |

Post-decoherence density matrix propagator for quantum Brownian motion J Halliwell, A Zoupas Physical Review D 55 (8), 4697, 1997 | 45 | 1997 |

Nonequilibrium quantum electrodynamics C Anastopoulos, A Zoupas Physical Review D 58 (10), 105006, 1998 | 21 | 1998 |

Phase space localization and approach to thermal equilibrium for a class of open systems A Zoupas Physics Letters A 219 (3-4), 162-168, 1996 | 3 | 1996 |

Definition of" conserved Quantities" in General Relativity and Other Theories of Gravity Within the Hamiltonian Framework A Zoupas Recent Developments In Gravity, 164-168, 2003 | | 2003 |

Decoherence and localization in open systems A Zoupas Imperial College London, 1997 | | 1997 |