Geometric analysis on the Heisenberg group and its generalizations /
Calin, Ovidiu.
Chang, Der-chen E.
Greiner, P. C.(Peter Charles),1938-
Providence, R.I. : American Mathematical Society ; [Somerville, MA] : International Press,
c2007.
Includes bibliographical references (p. 239-240) and index.
Global differential geometry.
Geometry, Riemannian.
Riemannian manifolds.