Advances in Mathematics · 2009 · 87 citations · 15 references
Natural SciencesMathematicsPhysicsGeometryCurved SpacetimeDifferential GeometryGeodesic MotionMetric GeometryRiemannian GeometrySpacetime GeometryGeodesic EquationsPseudo-riemannian GeometryRiemannian Metric
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A. A. Kirillov · Russian Mathematical Surveys · 1976 · 301 citations
Equivalence of glancing hypersurfaces
Richard Melrose · Inventiones mathematicae · 1976 · 140 citations