T. Van Voorhis and E.J. Heller, “Similarity transformed semiclassical dynamics”, J. Chem. Phys. 119, 12153 (2003); M. Nakano, R. Kishi, and T. Nitta, “Monte Carlo wave-function approach to the quantum-phase dynamics of a dissipative molecular system interacting with a single-mode amplitude-squeezed field,” ibid. 119, 12106 (2003).