Sources to learn about Greens functions

Question

For a physics major, what are the best books/references on Greens functions for self-studying?

My mathematical background is on the level of Mathematical Methods in the physical sciences by Mary Boas.

Answer 1

Some sources which you can pretty much get on googling

http://math.arizona.edu/~lega/583/Fall98/lectnotes/GF1.html

http://farside.ph.utexas.edu/teaching/em/lectures/node49.html

http://www.youtube.com/watch?v=r317iUJfAeI

http://www.phys.washington.edu/users/baker/green.pdf

http://physics.ucsc.edu/~peter/250/gf.pdf

http://academicearth.org/lectures/delta-function-and-greens-function

Answer 2

I recommend Sommerfeld. The sixth volume of his physics series is pure maths, PDE's of Physics and is a wonderful physicists' view of the maths.