1. Blaschke, W.: Ebene Kinematik. Tuebner, Leibzig (1938)
2. Calvet, R.G.: Treatise of Plane Geometry Through Geometric Algebra. TIMSAC (2007)
3. Clifford, W.K.: A preliminary sketch of biquaternions. Proc. Lond. Math. Soc. 4, 381–395 (1873)
4. Clifford, W.K.: Applications of Grassmann’s extensive algebra. Am. J. Math. 1(4), 350–358 (1878)
5. Dorst, L., Fontijne, D., Mann, S.: Geometric Algebra for Computer Science. Morgan Kaufmann, San Francisco (2007)