Evans, Lawrence C. Partial Differential Equations. 2nd ed. Graduate studies in mathematics. Providence, R.I.: American Mathematical Society, 2010. Print.
Farlow, Stanley J. Partial Differential Equations for Scientists and Engineers. Dover books on advanced mathematics. New York: Dover Publications, 1993. Print.
John, Fritz. Partial Differential Equations. 4th ed. Applied mathematical sciences. New York: Springer-Verlag, 1982. Print.
Strauss, Walter A. Partial Differential Equations: An Introduction. 2nd ed. New York: Wiley, 2008. Print.
