Q. Kong

Some necessary and sufficient conditions for oscillation of neutral differential equations

L. Erbe, Q. Kong, 1996 .

Dependence of Eigenvalues on the Problem

A. Zettl, H. Wu, Q. Kong, 1997 .

OSCILLATION OF A FORCED SECOND ORDER NONLINEAR EQUATION

Q. Kong, 1994 .

Regular Approximations of Singular Sturm-Liouville Problems with Limit-Circle Endpoints

L. Kong, A. Zettl, H. Wu, 2004 .