This program was written by Gregory Soyez(1) and Gavin Salam(2)

Address: (1) IPhT, CEA Saclay
	     Orme des Merisiers, Bat 774
	     F-91191 Gif-sur-Yvette Cedex
	     France

	 (2) Rudolf Peierls Centre for Theoretical Physics, Parks Road, Oxford OX1 3PU, UK;
             PH-TH, CERN, CH-1211 Geneva 23, Switzerland;
             LPTHE, UPMC (Univ. Paris 6), 75252 Paris cedex 05, France.

email  : soyez@fastjet.fr
         gavin.salam@physics.ox.ac.uk