Strings and gravity : tying the forces together : proceedings of the fifth francqui colloquium, 19-21 October 2001, Brussels. : Oct 2001, Brussels, Belgium. (Francqui Scientific Library ; 5)
Strings and gravity : tying the forces together : proceedings of the fifth francqui colloquium, 19-21 October 2001, Brussels. : Oct 2001, Brussels, Belgium.