A generalization of the Friedrichs angle and the method of alternating projections

Catalin Badea; Sophie Grivaux; Vladimir Müller

Comptes Rendus. Mathématique, Volume 348 (2010) p. 53-56

Invertible extensions and growth conditions

Catalin Badea; Vladimir Müller

Comptes Rendus. Mathématique, Volume 339 (2004) p. 21-26