en This table is due to Arthur Cayley (1845) and John T. Graves (1843). See G Gentili, C Stoppato, DC Struppa and F Vlacci (), „Recent developments for regular functions of a hypercomplex variable”, În Irene Sabadini, M Shapiro, F Sommen, Hypercomplex analysis (ed. Conference on quaternionic and Clifford analysis; proceedings), Birkaüser, p. 168, ISBN978-3-7643-9892-7Mentenanță CS1: Nume multiple: lista autorilor (link)
en Lev Vasilʹevitch Sabinin, Larissa Sbitneva, I. P. Shestakov (), „§17.2 Octonion algebra and its regular bimodule representation”, Non-associative algebra and its applications, CRC Press, p. 235, ISBN0-8247-2669-3Mentenanță CS1: Nume multiple: lista autorilor (link)