“…Holmberg (1986Holmberg ( , 1999, Josefsson (1992Josefsson ( , 2003Josefsson ( , 2010, Pedersen (1993), Vikner (1994Vikner ( , 1997Vikner ( , 2005, Hellan & Platzack (1995), Collins & Thráinsson (1996), Sells (2001a), Thráinsson (2001Thráinsson ( , 2007Thráinsson ( , 2013 this issue), Svenonius (2002), Andréasson (2008Andréasson ( , 2009Andréasson ( , 2010, Anderssen & Bentzen (2012), Bentzen, Anderssen & Waldmann (2013 this issue), Engels & Vikner (2013 this issue), Ørsnes (2013 this issue).…”