Jabri, Y.
The mountain pass theorem: Variants, generalizations and some applications - Cambridge Cambridge University Press 2003 - xii, 369p. - Encyclopedia of mathematics and its application. 95. .
978-0-521-82721-8
The mountain pass theorem: Variants, generalizations and some applications - Cambridge Cambridge University Press 2003 - xii, 369p. - Encyclopedia of mathematics and its application. 95. .
978-0-521-82721-8