books.google.com - Acclaimed by American Scientist as "a classic text on field theoretic methods in statistical physics," this comprehensive introduction to the many-body theory and its ramifications was written by three internationally known Russian physicists. It constitutes an invaluable guide to physicists, mathematicians,...http://books.google.com/books/about/Methods_of_Quantum_Field_Theory_in_Stati.html?id=E_9NtwNY7UcC&utm_source=gb-gplus-shareMethods of Quantum Field Theory in Statistical Physics