Douglas S. Shafer

The center problem on a center manifold in

V. F. Edneral, Adam Mahdi, Valery G. Romanovski et al. · Nonlinear Analysis · 2011 · 50 citations

Geometry, Manifold Modeling, Center Problem +2

Multiple bifurcation in a predator–prey system with nonmonotonic predator response

Franz Rothe, Douglas S. Shafer · Proceedings of the Royal Society of Edinburgh Section A Mathematics · 1992 · 35 citations

Dynamic Equilibrium, Engineering, Cusp Type +10

Separatrix and limit cycles of quadratic systems and Dulac’s theorem

Carmen Chicone, Douglas S. Shafer · Transactions of the American Mathematical Society · 1983 · 32 citations · Full text

Limit Cycles, Quadratic Vector Field, Quadratic Systems +2

The 1: −q resonant center problem for certain cubic Lotka–Volterra systems

Xingwu Chen, Jaume Giné, Valery G. Romanovski et al. · Applied Mathematics and Computation · 2012 · 32 citations

Center Problem, Physics

Bifurcation of Limit Cycles from Quadratic Centers

Douglas S. Shafer, André Zegeling · Journal of Differential Equations · 1995 · 28 citations

Oscillation Theory, Bifurcation Theory, Quadratic Centers +2