Kopietz, P. Introduction to the functional renormalization group [Electronic resource] / P. Kopietz, L. Bartosch, F. Schutz. - Electronic text data. - Berlin ; Heidelberg : Springer, 2010. - (Lecture notes in physics, ISSN 0075-8450 ; 798). - ISBN 978-3-642-05094-7 : Б. ц.