1. R. Abraham, J. E. Marsden and T. Ratiu,Manifolds, Tensor Analysis, and Applications, Springer-Verlag, 1980.
2. P. Albrecht,The extension of the theory of A-methods to RK-methods, in Numerical Treatment of Differential Equations, in Proceedings 4th Seminar NUMDIFF-4, ed. K. Strehmel, Teubner-Texte zur Mathematik, Leipzig, (1987), pp. 8–18.
3. R. L. Bryant,An Introduction to Lie Groups and Symplectic Geometry, in Geometry and Quantum field theory, Eds. Freed and Uhlenbeck, AMS IAS/Parc City math. series vol. 1, (1995), pp. 1–182.
4. J. C. Butcher,Coefficients for the study of Runge-Kutta integration processes, J. Austral. Math. Soc., 3 (1963), pp. 185–201.
5. J. C. Butcher,An algebraic theory of integration methods, Math. Comput. 26 (1972), pp. 79–106.