INVARIANT EXPANSIONS IN A CONE AND UNITARY TRANSFORMATIONS OF THE AMPLITUDES.

UNITARY TRANSFORMATIONS AND THE ACTION PRINCIPLE

UNITARY TRANSFORMATIONS AND THE ACTION PRINCIPLE

CANONICAL COMMUTATION RELATIONS AND ASYMPTOTIC BEHAVIOR OF THE TRANSITION AMPLITUDES

DUAL AMPLITUDES AND BASIC ASSUMPTIONS. [PART] I.

THE PROBLEM OF MOMENTS AND THE MEANING OF PERTURBATION EXPANSIONS IN QUANTUM PHYSICS

COMMENT ON THE POINT TRANSFORMATIONS IN QUANTUM THEORY.