Non autonomous evolution operators of hyperbolic type.
Non hypoellipticité des opérateurs différentiels du type de Fuchs
Non hypoellipticité d'opérateurs elliptiques singuliers
Nonlinear operator equations and boundary-value problems
Nonlinear perturbations of linear elliptic and parabolic problems at resonance : existence of multiple solutions
Nonlinear potential equations with linear parts at resonance
Non-self-adjoint singular Sturm-Liouville problems with boundary conditions dependent on the eigenparameter.
Non-trapping condition for semiclassical Schrödinger operators with matrix-valued potentials.
Normale Auflösbarkeit bei linearen partiellen Differentialoperatoren in lokalen gewichteten Sobolevräumen.