Köplinger, J. (2009). Nonassociative Quantum Theory on Octooctonion Algebra. Journal of Physical Mathematics, 1(), 1-14. https://www.airitilibrary.com/Article/Detail?DocID=20900899-200907-201011150060-201011150060-1-14
BARTH, K. F., & BRANNAN, D. A. (1996). ASYMPTOTIC TRACTS OF HARMONIC FUNCTIONS III. International Journal of Mathematics and Mathematical Sciences, 1996(), 633-636. https://doi.org/10.1155/S0161171296000890