The Duberstein Group
The Duberstein Group is a Washington D.C. lobbying company. Its chairman and CEO is Kenneth M. Duberstein.
The Center for Public Integrity report that in 2004 the company revenues were $1.82 million. 
- "The Duberstein Group Inc.", Center for Public Integrity, accesed September 2005.
- Jeffrey St. Clair, "The Monsanto Machine", Common Dreams, accessed September 2005. First published in the March 7, 1999 issue of In These Times.
- "The Work and Ethics of Lobbyists", All Things Considered, NPR, January 9, 2006. (An interview with Mike Berman president of the Duberstein Group.