books.google.com - Many physical processes in fields such as mechanics, thermodynamics, electricity, magnetism or optics are described by means of partial differential equations. The aim of the present book is to demonstrate the basic methods for solving the classical linear problems in mathematical physics of elliptic,...http://books.google.com/books/about/Equations_in_Mathematical_Physics.html?id=cFIrf8_KNvgC&q=in%EF%AC+nite&utm_source=gb-gplus-shareEquations in Mathematical Physics