1. A local method of nonlinear analysis for differential equations;Brjuno,1989
2. Ideals, Varieties, and Algorithms: An Introduction to Computational Algebraic Geometry and Commutative Algebra;Cox,1997
3. W. Decker, G.M. Greuel, G. Pfister, H. Shönemann, Singular 3-1-6 – A computer algebra system for polynomial computations, 2012. http://www.singular.uni-kl.de.
4. W. Decker, S. Laplagne, G. Pfister, H. Schönemann, A SINGULAR 3–1 library for computing the prime decomposition and radical of ideals, primdec.lib, 2010.
5. Reversible diffeomorphisms and flows;Devaney;Trans. Am. Math. Soc.,1976