The asymptotic estimates of solutions of difference equations

The asymptotic nature of solutions of linear systems of differential equations

Norman Levinson · Duke Mathematical Journal · 1948 · 211 citations

Linear Systems, Singularly Perturbed Problem, Linear System +4

Asymptotic Integrations of Linear Differential Equations

Philip Hartman, Aurel Wintner · American Journal of Mathematics · 1955 · 109 citations

Singularly Perturbed Problem, Assertion Concerning, Linear Differential Equations +2

Asymptotic behavior of solutions of differential-difference equations.

Richard Bellman, Kenneth L. Cooke · Memoirs of the American Mathematical Society · 1959 · 94 citations

Asymptotic Behavior, Oscillation Theory, Integral Equation +3

Asymptotic behavior of solutions of ordinary difference equations

Charles V. Coffman · Transactions of the American Mathematical Society · 1964 · 89 citations · Full text

Asymptotic Behavior, Vector-valued Function, Perturbation Method +6

Asymptotic Integrations of Ordinary Non-Linear Differential Equations

Philip Hartman, Aurel Wintner · American Journal of Mathematics · 1955 · 27 citations

Oscillation Theory, Nonlinear Equation, Integrable System +1