Ghoussoub, N.
Duality and perturbation methods in critical point theory - Cambridge Cambridge University Press 1993 - xviii, 258p. - Cambridge tracts in mathematics, 107. .
978-0-521-44025-7
Duality and perturbation methods in critical point theory - Cambridge Cambridge University Press 1993 - xviii, 258p. - Cambridge tracts in mathematics, 107. .
978-0-521-44025-7