L.C. Evans, Partial Differential Equations, American Mathematical Society, Providence, 1998. ISBN 0-8218-0772-2
I. G. Petrovsky, Partial Differential Equations, W. B. Saunders Co., Philadelphia, 1967.
A. D. Polyanin, Handbook of Linear Partial Differential Equations for Engineers and Scientists, Chapman & Hall/CRC Press, Boca Raton, 2002. ISBN 1-58488-299-9
A. Sommerfeld, Partial Differential Equations in Physics, Academic Press, New York, 1949.
