Clustering for the spectrum of h-pseudodifferential operators with periodic flow on an energy surface, J. Funct. Anal, vol.145, pp.296-311, 1997. ,
Helffer : Introduction to the semiclassical analysis for the Schrödinger operator and applications, p.1336, 1988. ,
Comportement semi-classique du spectre des hamiltoniens quantiques hypoelliptiques, Annales ENS Pise IV, vol.9, issue.3, pp.405-431, 1982. ,
Multiple wells in the semi-classical limit, I. Comm. in P.D.E, vol.9, issue.4, pp.337-408, 1984. ,
Puits multiples en mecanique semi-classique ,
The Weyl calculus of pseudo-differential operators, Comm. Pure Appl. Math, vol.32, pp.359-443, 1979. ,
Microlocal analysis and precise spectral asymptotic, 1998. ,
DOI : 10.1007/978-3-662-12496-3
A semi-classical trace formula for Schroedinger operators in the case of critical energy level, J. Funct. Anal, vol.146, issue.2, pp.299-351, 1997. ,
Développement asymptotiques et effet tunnel dans l'approximation de Born-Oppenheimer, Ann. Inst. Henri Poincaré, vol.49, issue.3, pp.239-257, 1989. ,
Semiclassical Eigenvalue Asymptotics for a Schrödinger Operator with Degenerate Potential, Asymptotic Anal, vol.22, issue.1, pp.39-49, 2000. ,
Comportement asymptotique des valeurs propres d'opérateurs du type de SchrödingerSchrödingerà potentiel dégénéré, J. Math. Pures et Appl, vol.61, pp.275-300, 1982. ,
Asymptotics of the eigenvalues of the Schrödinger operator, Math. USSR Sbornik, issue.3, pp.22349-371, 1974. ,
Nonclassical eigenvalue asymptotics, J. of Funct. Analysis, vol.53, pp.84-98, 1983. ,
Semi-classical analysis of low lying eigenvalues I, Ann. Inst. H. Poincaré, vol.38, pp.295-307, 1983. ,
Asymptotics of the spectrum of the Schrödinger operator with nonregular homogeneous potential, Math. USSR Sbornik, issue.1, pp.55-74, 1986. ,
Semi-classical asymptotics for magnetic bottles, Asymp. Analysis, vol.15, pp.385-395, 1997. ,