@article {462,
	title = {Quantum Time Correlation Functions and Classical Coherence},
	journal = {Chem. Phys.},
	volume = {233},
	year = {1998},
	pages = {243-255},
	doi = {10.1016/S0301-0104(98)00027-5},
	author = {R. Hernandez and G. A. Voth}
}
