Subfunctions and second-order ordinary differential inequalities

Generalized convex functions

E. F. Beckenbach · Bulletin of the American Mathematical Society · 1937 · 144 citations · Full text

On the Harnack inequality for linear elliptic equations

James Serrin · Journal d Analyse Mathématique · 1954 · 91 citations

Natural Sciences, Oceanography, Aerodynamics +5

Generalized convex functions and second order differential inequalities

M. M. Peixoto · Bulletin of the American Mathematical Society · 1949 · 81 citations · Full text

Natural Sciences, Mathematics, Differential Equations +11

A subfunction approach to a boundary value problem for ordinary differential equations

Jerrold Bebernes · Pacific Journal of Mathematics · 1963 · 64 citations · Full text

Natural Sciences, Mathematics, Physics +8

Comparison theorems for nonlinear differential equations

Lloyd Jackson, Keith Schrader · Journal of Differential Equations · 1967 · 63 citations

Natural Sciences, Mathematics, Differential Equations +10