\newcommand{\Copyright}{%
\begin{center}
- Copyright \copyright\ 1995 Free Software Foundation, Inc.\\*
+ Copyright \copyright\ 1995, 2002, 2003, 2004,
+ 2005, 2006 Free Software Foundation, Inc.\\*
Copyright \copyright\ 1995 Vladimir Alexiev
$<$vladimir@cs.ualberta.ca$>$.\\*
Copyright \copyright\ 2000 Felix Natter $<$fnatter@gmx.net$>$.\\*