There are others, and more information here: http://scienceblogs.com/pontiff/2009/11/igon_value_problems.php http://scienceblogs.com/pontiff/2009/11/igon_value_

There are others, and more information here: http://scienceblogs.com/pontiff/2009/11/igon_value_problems.php http://scienceblogs.com/pontiff/2009/11/igon_value_problems....