Free Preview of New Variational Techniques in Mathematical Physics: Lectures given at a Summer School of the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Bressanone (Bolzano), Italy, June 17-26, 1973
New Variational Techniques in Mathematical Physics: Lectures given at a Summer School of the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Bressanone (Bolzano), Italy, June 17-26, 1973