Sommaire du Fascicule no. 1

Parametrix for a characteristic Cauchy problem
Algebraic varieties of dimension three whose hyperplane sections are Enriques surfaces
Harmonic maps into a hemisphere
The distribution of finite values of meromorphic functions with few poles
On Dyson's lemma
Abrupt and smooth separation of free boundaries in flow problems

Sommaire du Fascicule no. 2

Propagation of singularities for a first order semi-linear system in ℂ n+1
On the elliptic equation Lu-k+Kexp[2u]=0
Existence and convexity for hyperspheres of prescribed mean curvature
Déplacements à déformations bornées et champs de contrainte mesures
An estimate of the gap of the first two eigenvalues in the Schrödinger operator

Sommaire du Fascicule no. 3

Nonsteady flow of water and oil through inhomogeneous porous media
Large time behaviour of solutions of the heat equation with absorption
Elliptic differential operators on noncompact manifolds
The absolute Galois group of a pseudo real closed field
Local holomorphic extendability and non-extendability of CR-functions on smooth boundaries

Sommaire du Fascicule no. 4

On the Hausdorff measures associated to the Carathéodory and Kobayashi metrics
Pseudodistances invariantes sur les domaines d'un espace localement convexe
Problème de la surface libre de l'équation de Navier-Stokes - Cas stationnaire et cas périodique
Twistorial construction of harmonic maps of surfaces into four-manifolds
Finite rank, relatively bounded perturbations of semigroups generators