1. Boas, M. L. (1983). Mathematical methods in the physical sciences ((2) ed.). New York: John Wiley & Sons.
2. Cvitanovic, P., Artuso, R., Dahlqvist, P., Mainieri, R., Tanner, G., Vattay, G., et al (2004). Chaos: classical and quantum, version 14.4.1 (April 21, 2013). Retrieved February 1, 2015 at ChaosBook.org .
3. Eigen, M., & Schuster, P. (1979). The hypercycle: A principle of natural self organization. Berlin: Springer.
4. Eriksen, E. F., Axelrod, D. W., & Melsen, F. (1994). Bone histomorphometry. New York: Raven Press.
5. Fauser, B. (2002). A treatise on quantum Clifford algebras. arXiv:math/0202059v1 [math.QA] 7 Feb 2002.