== References ==
<nocite>{{Ref|Destout 2008}}DESTOUTE2008{{Ref|Gebuhr 2000}}GEBUHR2000{{Ref|Halpin 2008}}HALPIN2008{{Ref|Hornig 2014}}HORNIG2014{{Ref|Manley 1985}}MANLEY1985{{Ref|Paulsen 1999}}PAULSEN1999{{Ref|Stephenson 2007}}STEPHENSON2007WALTON1997</nocite><biblio force=false>#[[Template:Bib]]</biblio>{{Ref|Walton 1997}}
<HarvardReferences />
