1. Accardi, L.: On the quantum Feynman-Kac formula (preprint)
2. Accardi, L., Frigerio, A., Lewis, J.T.: Quantum stochastic processes (preprint)
3. Cockroft, A.M., Hudson, R.L.: Quantum mechanical Wiener processes. J. Multivar. Anal.7, 107–124 (1978)
4. Davies, E.B.: Some contraction semigroups in quantum probability. Z. Wahrsch. Verw. Geb.23, 261–273 (1972)
5. Evans, D.E., Lewis, J.T.: Dilations of irreversible evolutions in algebraic quantum theory. Commun. Dublin Inst. for Adv. Studies, Series A24 (1974)