1. Topological Geometry;Porteous,1981
2. Clifford Algebras and the Classical Groups;Porteous,1995
3. Clifford Algebras and Spinors;Lounesto,1997
4. A special irreducible matrix representation of the real Clifford algebra C(3,1)
5. Isoclinic n -planes in Euclidean 2 n -space, Clifford parallels in elliptic ( 2n−1 )-space, and the Hurwitz matrix equations;Wong;Mem. Am. Math. Soc.,1961