“…(2006, Bitzer and Schröder 2005 Lerner and Tirole (2002), Goth (2001), Lerner and Tirole (2001), Torvalds and Diamond (2001), Ousterhout (1999). Schweik et al (2009), Thierstein (2009), van Rooij (2009), Whitehurst (2009), , Ellaway and Martin (2008), Luyt (2008), Pfaffman (2008), Watson et al (2008b), Weekes (2008), Hewson (2007), Lunsford II (2007), Pfaffman (2007), Szulik (2007), van Rooij 2007, Wheeler (2007), Bennett and Watson (2006), Bisson (2006), Haughwout (2006), Perkins and Pfaffman (2006), Reas and Fry (2006), Snyder Jr. andQaissaunee (2006), Stephenson (2006), Currie (2005), Gandel and Wheeler (2005), Skiba (2005), Angster (2004), Glance et al (2004), Hepburn (2004), Ringle (2004), Serrano et al (2004), Wheeler (2004a), Wheeler (2004b), Roach (2003), Moore (2002), Racine and Hyndman (2002), Kumar et al (2001).…”