海量图书期刊资源,随时随地畅享阅读乐趣
Some topological invariants for three-dimensional flowsDufraine, Emmanuel · Chaos: An Interdisciplinary Journal of Nonlinear Science · 2001
Équivalence topologique de connexions de selles en dimension 3BONATTI, CHRISTIAN; DUFRAINE, EMMANUEL · Ergodic Theory and Dynamical Systems · 2003
About homotopy classes of non-singular vector fields on the three-sphereEmmanuel Dufraine · 2002