Lazard, Francette
[Author];
Legrand, Jacques
[Author];
Avramov, Roumen
[Author];
Boccara, Paul
[Author];
Samary, Catherine
[Author];
Marton, Imre
[Author];
Engert, Manfred
[Author];
Biard, Joël
[Author];
Iliev, Petkor
[Author];
Decaillot, Maurice
[Author]