books.google.co.uk - This well-known text and reference contains an account of those parts of mathematics that are most frequently needed in physics. As a working rule, it includes methods which have applications in at least two branches of physics. The authors have aimed at a high standard of rigour and have not accepted...http://books.google.co.uk/books/about/Methods_of_Mathematical_Physics.html?id=Qs-xdYBQ_5wC&utm_source=gb-gplus-shareMethods of Mathematical Physics