Prof. Marc Audard
	   ISDC & Geneva Observatory
	   Ch. d'Ecogia 16
	   CH-1290 Versoix
	   Switzerland
  Phone:   +41 22 379 21 66 (direct line)
  Fax:     +41 22 379 21 33

  e-mail:  Marc.Audard_@_unige.ch