1. Epstein, H., Glaser, V.: CERN preprint TH 1156 reprinted in Vol. 11 of “Prépublications de la RCP no 25” (Strasbourg 1970) and to appear in the proceedings of the 1970 Les Houches Summer School. Also: CERN preprint TH 1400 to appear.
2. Jaffe, A.: Phys. Rev.158, 1454 (1967); also: Contribution to the informal meeting on renormalization, ICTP, Trieste 1969.
3. Gelfand, I., Shilov, G.: Generalized functions, in particular, Vol. 2. Moscow: Fismatgiz, 1958.
4. Mandelbrojt, S.: Fonctions entières et transformées de Fourier et applications. Math. Soc. Jap. 1967.
5. Efimov, G.: Commun. math. Phys.5, 42 (1967);7, 138 (1968).