A new approach to the method of nonlinear variation of parameters
On the existence of zeros of Lyapunov-monotone operators
On the numerical solution of a differential nonlinear eigenvalue problem on an infinite range
Fitting differential equation models to observed economic data—I. quasilinearization
Sobolev type differential equations
Efficiencies for window estimates of the parameters of the Cauchy distribution
An application of the Hadamard product to air pollution
A unified approach for finding real and integer solutions to systems of linear inequalities