zbMATH — the first resource for mathematics

Un terme etrange venu d’ailleurs. (French) Zbl 0496.35030
Nonlinear partial differential equations and their applications, Coll. de France Semin., Vol. II, Res. Notes Math. 60, 98-138 (1982).

35J35 Variational methods for higher-order elliptic equations
35B20 Perturbations in context of PDEs
35B30 Dependence of solutions to PDEs on initial and/or boundary data and/or on parameters of PDEs
35A35 Theoretical approximation in context of PDEs