참고문헌
- C. Ehresmann, Les connexions infinitesimales dans un espace fibre differentiable, Colloque de topologie, Bruxelles, 1950.
- S. Kobayashi and K. Nomizu, Foundations of Differential Geometry, Vol. I, Wiley-Interscience, New York, 1963.
- K. Nomizu, Kinematics and differential geometry-Rolling a ball with a prescribed locus of contact, Tohoku Math. J. 30 (1978), 623-637. https://doi.org/10.2748/tmj/1178229921