Exact Dynamic Systems are Tree-Like and Vice Versa
Publisher
Birkhäuser Boston
Reference4 articles.
1. K-T. Chen, Homotopy of algebras, J. Algebra 10 (1968), 183–193. MR 38 #1127.
2. K-T. Chen, An algebraic dualization of fundamental groups, Bull. Amer. Math. Soc. 75 (1969), 1020–1024.
3. P. Hartman, Ordinary differential equations, Wiley, New York, 1964. MR 30 #1270.
4. S. Smale, Differentiable dynamical systems, Bull. Amer. Math. Soc. 73 (1967), 747–817. MR 37 #3598.