1. I. M. Gel'fand, M. I. Graev andN. Ya. Vilenkin:Generalized Functions, Vol.5 (New York, 1966).
2. A. Bassetto andM. Toller:Harmonic analysis on the one-sheet hyperboloid and multiperipheral inclusion distributions, CERN Report 1499 (1972), hereafter referred to as BT.
3. B. Radhakrishnan andN. Mukunda:Spacelike representation of the inhomogeneous Lorentz group in a Lorentz basis, TIFR preprint 1972, hereafter referred to as RM (to appear inJourn. Math. Phys.).
4. Iff(x) is square integrable over the timelike sheet it is square integrable overSL 2,C itself.
5. C. E. Jones, F. E. Low andJ. E. Young:Ann. of Phys.,63, 476 (1971).