“…Christidou, 2008;Gates St-Pierre, 2007;Legrand and Sidéra, 2007;Maigrot, 2005;Sidéra and Legrand, 2006;Gijn van, 2005Gijn van, , 2007 and PHD dissertations (Griffitts, 2006;Legrand, 2007;LeMoine, 1991;Maigrot, 2003;Sidéra, 1993). These works show the importance of developing experimental programs as well as the systematic observation and documentation of tools at different magnification for building reliable up-to-date databases.…”