Lambert, Dominique Hyperbolic complex numbers: complexes that leave us perplexed. (Les nombres complexes hyperboliques: Des complexes qui nous laissent perplexes.) (French) Zbl 0982.30030 Rev. Quest. Sci. 166, No. 4, 383-400 (1995). Reviewer: B.Fauser (Tübingen) MSC: 30G35 12D99 15A66 PDFBibTeX XMLCite \textit{D. Lambert}, Rev. Quest. Sci. 166, No. 4, 383--400 (1995; Zbl 0982.30030)
Sommen, F. Spingroups and spherical means. II. (English) Zbl 0651.35073 Abstract analysis, Proc. 14th Winter Sch., Srní/Czech. 1986, Suppl. Rend. Circ. Mat. Palermo, II. Ser. 14, 157-177 (1987). Reviewer: F.Sommen MSC: 35Q05 15A66 30G35 33C55 53C65 PDFBibTeX XML Full Text: EuDML