1. Agrachev, A.A.: Rolling Balls and Octonions. In: Proceedings of the Steklov Institute of Mathematics 08/2007, Vol. 258, issue 1, 2007, pp. 13–22
2. Agrachev, A.A., Sachkov, Yu.L.: An intrinsic approach to the control of rolling bodies. In: Proceedings of the 38th IEEE Conference on Decision and Control, Vol. 1, (Phoenix, Arizona, USA, December 7–10, 1999). Piscataway, NJ: IEEE, 1999, pp. 431–435
3. Atiyah, M.F., Hitchin, N.J., Singer, I.M.: Self-duality in four dimensional Riemannian geometry. Proc. R. Soc. A 362, 425–61 (1978)
4. Bryant R., Hsu L.: Rigidity of integral curves of rank two distributions. Invent. Math. 114, 435–461 (1993)
5. Bor G., Montgomery R.: G 2 and the rolling distribution. L’Enseign. Math. 55, 157–196 (2009)