A geometric method of studying two point boundary value problems for second order systems

Ordinary Differential Equations.

C. E. Langenhop, G. Birkhoff, G.-C Rota · American Mathematical Monthly · 1963 · 1.3K citations

Natural Sciences, Autonomous Systems, Mathematics +15

On boundary value problems for systems of ordinary, nonlinear, second order differential equations

Philip Hartman · Transactions of the American Mathematical Society · 1960 · 119 citations · Full text

Natural Sciences, Mathematics, Differential Equations +12

On the existence of periodic solutions for second order vector differential equations

H. W. Knobloch · Journal of Differential Equations · 1970 · 77 citations

Natural Sciences, Mathematics, Physics +12

Boundary value problems for infinite systems of second-order differential equations

Klaus Schmitt, Russell G. Thompson‬‬ · Journal of Differential Equations · 1975 · 72 citations

Natural Sciences, Mathematics, Physics +16

Boundary value problems for nonlinear second-order vector differential equations

Jean Mawhin · Journal of Differential Equations · 1974 · 58 citations

Natural Sciences, Mathematics, Physics +14