Propagating edge states for a magnetic Hamiltonian. De Bièvre, Stephan; Pulé, Joseph V. — 1999 Mathematical Physics Electronic Journal [electronic only]
Quantum mechanics and coherent states on the anti-de Sitter spacetime and their Poincaré contraction Stephan De Bièvre; Amine M. El Gradechi — 1992 Annales de l'I.H.P. Physique théorique