barker et al. 2007, baker et al. 2007, barker et al. 2009, becker et al. 2007, fisher et al. 2007, bakker et al. 2008, barker et al. 2012 animal, bakker et al. 2005, baker et al. 2008, baker et al. 2004, baker et al. 1998, baker et al. 2002, becker et al. 2009, baer et al. 2006, baker et al 2009
barker et al. 2007. There are any references about barker et al. 2007 in here. you can look below.