Nonlinear operators and the calculus of variations : summer school held in Bruxelles, 8-19 September, 1975 /
ed. by J. P. Gossez [et al.].
- Berlin [etc.] : Springer-Verlag, 1976.
- 235 s. ; 24 cm.
- Lecture Notes in Mathematics, 543 0075-8434 ; .
- Lecture Notes in Mathematics 543 .