C.M. Brauner, Bordeaux, France, J. Hulshof
C.J. Budd, Bath, U.K., J. Hulshof, L.A. Peletier
B. Buffoni, Lausanne, Switzerland, M.A. Peletier
R. Cavazzoni, Firenze, Italy, J. Hulshof, L.A. Peletier
M. Comte, Paris, France, J. Hulshof, L.A. Peletier
S. Eidelman, Kiev, Ukraine, J. Hulshof, L.A. Peletier
R. Eymard, Ponts et Chaussees, France, J. Hulshof, L.A. Peletier
R. Ferreria, Madrid, Spain, J. Hulshof, L.A. Peletier
T. Gallay, Orsay, France, L.A. Peletier
O. Gil, Uruguay, J. Hulshof
G. Gruen, Bonn, Germany, J. Hulshof, L.A. Peletier
A. Hauraux, Paris, France, J. Hulshof, L.A. Peletier
D. Hilhorst, Orsay, France, L.A. Peletier
F. Issard-Roch, Orsay, France, J. Hulshof, L.A. Peletier
M.A. Jendoubi, Versailles, France, J. Hulshof, L.A. Peletier
S. Kamin, Tel-Aviv, Israel, J. Hulshof, L.A. Peletier
Karadzhov, Bulgaria, R. van der Hout
J.R. King, Nottingham, U.K., J. Hulshof, L.A. Peletier
H.A. Levine, Iowa, U.S.A., M.A. Peletier
E. Logak, Cergy-Pontoise, France, J. Hulshof, L.A. Peletier
C. Marchi, Rome, Italy, J. Hulshof, L.A. Peletier
Y. Martel, Cergy-Pontoise, France, J. Hulshof, L.A. Peletier
F. Merle, Cergy-Pontoise, France, J. Hulshof, L.A. Peletier
M. Mimura, Hiroshima, Japan, J. Hulshof, L.A. Peletier
R. dal Passo, Rome, Italy, J. Hulshof, L.A. Peletier
Ph. Rosenau, Tel-Aviv, Israel, J. Hulshof, L.A. Peletier
R. Schützle, Freiburg, Germany, J. Hulshof, L.A. Peletier
P. Souplet, Versailles, France, J. Hulshof, L.A. Peletier
N. Stavrakasis, Crete, Greece, J. Hulshof, L.A. Peletier
A. Terracina, Rome, Italy, J. Hulshof, L.A. Peletier
A. Tesei, Rome, Italy, J. Hulshof, L.A. Peletier
W. Vilucchi, Rome, Italy, R. van der Hout
J.L. Vazquez , Madrid, Spain, J. Hulshof, L.A. Peletier