@inproceedings{Bec-Col-Ker-Jol-1995,
    author={Éliane Bécache and Francis Collino and Michel Kern and 
           Patrick Joly },
    title={On two Migration Methods based on Paraxial Equations in a 3D 
           heterogeneous Medium },
    organization={Mathematical Methods in Geophysical Imaging III, part of 
           SPIE’s 1995 International Symposium on Optical Science, 
           Engineering and Instrumentation, San Diego },
    year={1995 },
    month={7},
}