Innover ensemble / Innovate together - GUEYFFIER, M.-F; MARTIN, P; GUFFOND, J.-L; LECONTE, G; SALAGNAC, J.-L; BOBROFF, J; GUEYFFIER, M.-F; MARTIN, P; GUFFOND, J.-L; LECONTE, G; SALAGNAC, J.-L; BOBROFF, J (Innover ensemble, 1997)