Petz, D., Raggio, G. A. and Verbeure, A. (1988) Asymptotics of Varadhan-type and the Gibbs Variational Principle. (Preprint)
Raggio, G. A. (1988) The Free Energy of the Spin Boson Model. (Preprint)
Raggio, G. A. and Werner, R. F. (1988) Quantum Statistical Mechanics of General Mean Field Systems. (Preprint)
Raggio, G. A. (1987) Two level systems interacting with bosons: thermodynamic limit of thermodynamic functions. (Preprint)