On the collision operator in an exactly soluble model

Time-independent mean-field description of collisions: An exactly soluble model

Two exactly soluble models as a test of the hermitian operator method

Opérateur de collision et évolution dans des modèles quantiques exactement solubles

Multiple-Scattering in Some Exactly-Soluble Models.

Exactly Soluble Models in Statistical Mechanics; Historical Perspectives and Current Status

On the class of exactly soluble models of phase transitions