3 books • 4 series
Brouwer Degree (Progress in Nonlinear Differential Equations and Their Applications, #95)
Stability and Bifurcation Theory for Non-Autonomous Differential Equations (C.I.M.E. Foundation Subseries, #2065) (Lecture Notes in Mathematics, #2065)
Critical Point Theory and Hamiltonian Systems (Applied Mathematical Sciences, #74)