Rapports de contrats

• P. LAILLY, F. DELPRAT-JANNAUD, E. B´ECACHE, E. CHOVET. Reflection tomography: How to cope with multiple arrivals ? Part I: Method and preliminary results. 3ème rapport annuel, Consortium PSI , Septembre 1992.
• E. B´ECACHE. Reflection tomography: How to cope with multiple arrivals ? Part II : A new gradient computation method: continuous and discrete problems. 3ème rapport annuel, Consortium PSI , Septembre 1992.
• E. B´ECACHE, P. JOLY. Numerical analysis of adaptive stepize schemes for the approximation of the ray equations. rapport annuel du Consortium PSI , 1993.

• E. B´ECACHE, F. COLLINO, P. JOLY. Some new developments about paraxial approximations for the 3D wave equation. rapport annuel du Consortium PSI , 1994.

• E. B´ECACHE, F. COLLINO, P. JOLY. Higher Order Numerical Schemes for the Paraxial Wave Equation. Yearly report, PSI Consortium, 1995.

• E. B´ECACHE, P. JOLY, C. TSOGKA. New finite elements for the linear elatodynamics problem. Yearly report, SIGMA Consortium, 1998.

• E. B´ECACHE, P. JOLY, C. TSOGKA. Recent Developments in Mixed Finite Elements for Elastodynamics in Complex Media. Yearly report, SIGMA Consortium, 1999.