1. Bruck, R.H., Kleinfeld, E.: The structure of alternative division rings. Proc. Amer. Math. Soc. 2, 878–890 (1951)
2. Ebbinghaus, H.-D., Hermes, H., Hirzebruch, F., Koecher, M., Mainzer, K., Neukirch, J., Prestel, A., Remmert, R.: Numbers. With an introduction by K. Lamotke. Translated from the second 1988 German edition by H.L.S. Orde. Translation edited and with a preface by J.H. Ewing. Graduate Texts in Mathematics, 123. Readings in Mathematics. Springer-Verlag, New York (1991)
3. Mathematics Association of America Studies in Mathematics;E Kleinfeld,1963
4. Kleinfeld, E.: A short characterization of the octonions. Comm. Algebra (2021). https://doi.org/10.1080/00927872.2021.1943425
5. Springer Monographs in Mathematics;TA Springer,2000