Postnikov, M M.
Geometry VI : Riemannian Geometry - Berlin Springer 2001 - 503 - Encyclopaedia of mathematical sciences ; 00091 .
3540411089
Riemmanian Geometry
51(02) EMS
Geometry VI : Riemannian Geometry - Berlin Springer 2001 - 503 - Encyclopaedia of mathematical sciences ; 00091 .
3540411089
Riemmanian Geometry
51(02) EMS