A Characterization of n-Spheres in Space Forms and Its Complex Analogue.
Isometric Immersions of the Hyperbolic Plane into the Hyperbolic Space.
Quelques résultats en géométrie différentielle des espaces homogènes
Eine Kennzeichnung der projektiven Unterräume in dem komplexen projektiven Raum nach ihren Geodätischen.
Some Results Related to the Equivalence Problem in Riemannian Geometry.
On Circles and Spheres in Riemannian Geometry.
On Sectional Curvature of Indefinite Metrics.
On Sectional Curvature of Indefinite Metrics, II.
Isometric Immersions of Lorentzian Space Forms.
On a Theorem of Chern and Terng on Affine Surfaces.
A new model of unimodular-affinely homogeneous surfaces.
On the Geometry of Affine Immersions.
On the Gauss Mapping for Hypersurfaces of Constant Mean Curvature in the Sphere.
On Isometric Immersions of the Hyperbolic Plane Into the Lorentz-Minkowski Space and the Monge-Ampère Equation of a Certain Type.
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