@book(conway,
 author       = {J.H. Conway and D.A. Smith},
 year         = {2003},
 title        = {On Quaternions and Octonions: Their Geometry, Arithmetic, and Symmetry},
 publisher    = {AK Peters},
)
@inproceedings(quat,
 author       = {Princeton Companion Group},
 year         = {2008},
 title        = {Quaternions, Octonians, and Normed Division Algebras},
 editor       = {Timothy Gowers},
 booktitle    = {The Princeton Companion to Mathematics},
 publisher    = {Princeton University Press},
 doi          = {10.1515/9781400830398},
)
@inproceedings(koecher,
 author       = {M. Koecher and R. Remmert},
 year         = {1991},
 title        = {Chapter 7, Hamilton's Quaternions; Chapter 9, CAYLEY Numbers or Alternative Division Algebras; Chapter 10, Section 1, Composition Algebras},
 editor       = {F. Hirzebruch M. Koecher K. Mainzer J. Neukirch A. Prestel H.-D. Ebbinghaus, H. Hermes and R. Remmert},
 booktitle    = {Numbers},
 publisher    = {Springer-Verlag},
 doi          = {10.1007/978-1-4612-1005-4},
)
@misc(const,
 author       = {Wikipedia},
 year         = {2016},
 title        = {Cayley-Dickson construction: From Wikipedia, the free encyclopedia},
 url          = {https://en.wikipedia.org/wiki/Cayley-Dickson_construction},
)
@misc(sed,
 author       = {Wikipedia},
 year         = {2016},
 title        = {Sedenion: From Wikipedia, the free encyclopedia},
 url          = {https://en.wikipedia.org/wiki/Sedenion},
)