The Reduction of the Product of Two Irreducible Unitary Representations of the Proper Orthochronous Quantummechanical Poincaré Group

The irreducible unitary representations of the poincaré group {ie4-1}.- Matrix elements of the irreducible unitary representations of the little groups and expansion theorems for square-integrable functions on coset spaces of the little groups.- The reduction of the product of two irreducible unitary representations of {ie76-1}.