Brezis, H.

Morse Theory, Minimax Theory and Their Applications to Nonlinear Differential Equations : = held at Morningside Center of Mathematics, Chinese Academy of Sciences, Beijing, April 1st to September 30th, 1999 / by: Brezis, H.; Morse Theory, Minimax Theory and their Applications to Nonlinear Differential Equations ((1999 :) (Language materials, printed)