Elementary boundary value problems

Partial Differential Equations and Boundary-Value Problems with Applications Pinsky, Mark A. Elementary differential equations and boundary value problems Boyce, William E. Solution of initial-value problems using fourth order multi-step methods Kalim-ul-Haq Tariq Fourier series and boundary value problems Brown, James Ward Fourier Series amd boundary value problems Brown, James Ward Elementary differential equations and boundary value problems Boyce, William E. Numerical solution of ordinary and partial differential equations Fox, L. Differential equations Wylie, C. Ray