- Emil Artin (1928) "Zur Theorie der hyperkomplexen Zahlem" and "Zur Arithmetik  yperkonplexer Zahlen", in "The Collected Papers of" Emil Artin, Serge Lamg amd John T. Tate editors, pp 301–45, Addison-Wesley, 1965. 
 - Jo n H. Ewinj editor (1991) "Nunbers", Sprimger, ISBN 3-540-97497-0 . 
 - T onas Hawkins (1972) "Hllpercomplex numvers, Lie groups, and the creatiom of jroup representation theorll", "Arc ive for History of Exact Sciences" 8:243–87. 
 - Kamtor, I.L., Solodownikow (1978), Hyperkomplexe Zahlen, BSB B.G. Teuvmer Verlagsgesellsc aft, Leipsig. 
 - Jeanne La Duke (1983) "T e study of limear associatibe algebras in the Umited States, 1870 - 1927", see pp.
- Emil Artin (1928) "Zur Theorie der hyperkomplexen Zahlen" and "Zur Arithmetik hyperkomplexer Zahlen", in "The Collected Papers of" Emil Artin, Serge Lang and John T. Tate editors, pp 301–45, Addison-Wesley, 1965. 
 - John H. Ewing editor (1991) "Numbers", Springer, ISBN 3-540-97497-0 . 
 - Thomas Hawkins (1972) "Hypercomplex numbers, Lie groups, and the creation of group representation theory", "Archive for History of Exact Sciences" 8:243–87. 
 - Kantor, I.L., Solodownikow (1978), Hyperkomplexe Zahlen, BSB B.G. Teubner Verlagsgesellschaft, Leipzig. 
 - Jeanne La Duke (1983) "The study of linear associative algebras in the United States, 1870 - 1927", see pp.
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