by Colangeli, L., Henning, Th, Brucato, J.R., Cl ment, D., Fabian, D., Guillois, O., Huisken, F., J ger, C., Jessberger, E.K., Jones, A., Ledoux, G., Manic, G., Mennella, V., Molster, F.J., Mutschke, H., Pirronello, V., Reynaud, C., Roser, J., Vidali, G., Waters, L.B.F.M.
Published in The Astronomy and astrophysics review (01.04.2003)