[891] New constructions of fundamental polyhedra in complex hyperbolic space

[892] On uniformly homeomorphic normed spaces

[893] Quelques problèmes isopérimétriques

[894] On invariant and semi-invariant aberrations of the symmetrical optical system

[895] A nonlinear elliptic system for maps from Hermitian to Riemannian manifolds and rigidity theorems in Hermitian geometry