Zachmann D.W., DuChateau P. Partial differential equations

New York: McGrow Hill, 2011. - 250p.Classification and characteristics
Qualitative behavior of solutions to elliptic equations
Qualitative behavior of solutions to evolution equations
First-order equations
Eigenfunction expansions and integral transforms : theory
Eigenfunction expansions and integral transforms : applications
Green's functions
Different methods for parabolic equations
Difference methods for hyperbolic equations
Difference methods for elliptic equations
Variational formulation of boundary value problems
Variational approximation methods
The finite element method : an introduction.