Rösler, Margit. “Convolution Algebras Which Are Not Necessarily Positivity-Preserving.”10.1090/conm/183/02068__Applications of Hypergroups and Related Measure Algebras, vol. 183, American Mathematical Society, 1995, pp. 299–318, doi:10.1090/conm/183/02068.
LibreCat: /record/40209
DOI: 10.1090/conm/183/02068