$CERS SEC Filings

Filing Filed On
DEF 14A 10 May 2004
DEF 14A 30 Apr 2003
DEF 14A 30 Apr 2002
DEF 14A 18 Apr 2001
DEFINITIVE PROXY MATERIALS 11 Apr 2000
DEFINITIVE PROXY MATERIALS 28 May 1999
DEFINITIVE PROXY MATERIAL 08 May 1998