Partial Differential Equations and Boundary Value Problems by Nakhle H. Asmar

Partial Differential Equations by P.R. Garabedian

Boundary Value Problems: And Partial Differential Equations by David L Powers

Modern Methods in Partial Differential Equations (Dover Books ...

Differential Equations with Boundary-Value Problems by Michael R. Cullen and Den

Inverse Problems for Partial Differential Equations by Isakov, Victor

schaum's outline series- Partial Differential Equations McGraw-Hill

Introduction to Partial Differential Equations with Applications - Zachmanoglou