On the essential spectrum of magnetic pseudodifferential operators

Marius Măntoiu; Radu Purice; Serge Richard

Comptes Rendus. Mathématique, Volume 344 (2007) p. 11-14

A Hardy type estimate with exponential weights

Marius Mǎntoiu; Radu Purice

Comptes Rendus. Mathématique, Volume 335 (2002) p. 1023-1027