Khapalov, A. Y. Controllability of partial differential equations governed by multiplicative controls [Electronic resource] / A. Y. Khapalov. - Electronic text data. - Berlin ; Heidelberg : Springer, 2010. - (Lecture notes in mathematics, ISSN 0075-8434 ; 1995). - ISBN 978-3-642-12413-6 : Б. ц.