Beyer, H. R. Beyond partial differential equations [Electronic resource] : on linear and quasi-linear abstract hyperbolic evolution equations / H. R. Beyer. - Electronic text data. - Berlin ; Heidelberg : Springer, 2007. - (Lecture notes in mathematics, ISSN 0075-8434 ; 1898). - ISBN 978-3-540-71129-2 : Б. ц.