Changes
/* References */
== References ==
{{Ref|Backhouse 1984}}
{{Ref|Brown 1991}}
{{Ref|Brown 2007}}
{{Ref|Budny 1997}}
{{Ref|Campbell 1982}}
{{Ref|Dodwell 1993}}
{{Ref|Fuglesang 1980}}
{{Ref|Kendrick 1949}}
{{Ref|Mittman & Kidd 2010}}
{{Ref|Ohlgren 1992}}
{{Ref|Temple 1976}}
<HarvardReferences />