Transactions of the American Mathematical Society · 1961 · 47 citations · 17 references
Natural SciencesMathematicsApplied MechanicsDifferential EquationsDynamical SystemsContinuous Dynamical SystemsDifferential SystemsDissipative SystemsNonlinear DynamicsStability TheorySystems Of Differential EquationsNonlinear OscillationsOscillation TheorySelf-adjoint Eigenvalue ProblemsSelf-adjoint OperatorsStability Of Functional Differential Equations
17