- Argentina
- Mischis and Moreno, 2003; Mischis and Herrera 2006; Mischis et al., 2006
- Australia
- Baker et al., 1997
- Bolivia
- Römbke and Hanagarth, 1994
- Canada
- Addison, 2009; Alberta: Addison, 2009; British Columbia: Marshall et al., 2007; Manitoba: Reynolds, 2000; New Brunswick: Reynolds, 2001; Newfoundland: Addison, 2009; Nova Scotia: Addison, 2009; Ontario: Addison, 2009; Prince Edward Is.: Addison, 2009; Quebec: Addison, 2009; Yukon Territory: Teale, 2007
- Chile
- Zicsi, 1993; Muñoz-Pedreros et al., 1997; Muñoz-Pedreros et al., 2001; Zicsi and Csuzdi, 2001
- Colombia
- Fajardo and Prince, 1976; Feijoo, 1993; Feijoo, 2007
- Denmark
- Blakemore, 2007
- Finland
- Blakemore, 2007
- France
- Bouché, 1972; Cluzeau and Trehen, 1992; Nahmani et al., 2003
- Germany
- Dworschak, 1997; Matthies et al., 1999
- Greenland
- Gates, 1972; Blakemore, 2007b
- Iceland
- Gates, 1972; Blakemore, 2007b
- New Zealand
- Lee, 1959; Martin, 1977
- Norway
- Stöp-Bowitz, 1969; Sveistrup et al., 1997; Hansen and Engelstad, 1999; Blakemore, 2007; Pommeresche and Løes, 2009
- Russia
- Perel, 1979; Vsevolodova-Perel, 1988; Vsevolodova-Perel, 1997; Blakemore, 2007c
- Saint Helena Island
- Reynolds et al., 2002; Reynolds et al., 2005; Blakemore, 2008
- Sweden
- Blakemore, 2007
- The Netherlands
- Hobbelen et al., 2006
- United Kingdom
- Sims and Gerard, 1985; Blakemore, 2008; Wales: Morgan and Morgan, 1999
- United States
- Butt et al., 1999; Keller et al., 2007; Alabama: Reeves et al., 1999; Arizona: Reynolds, 2008; Illinois: Keller et al., 2007; Indiana: Keller et al., 2007; Maryland: Szlavecz and Csuzdi, 2007; Michigan: Keller et al., 2007; Minnesota: Hendrix and Bohlen, 2002; Minnesota: James and Hendrix, 2004; New York: Suarez et al., 2006; Oklahoma: Reynolds et al., 2010; South Carolina: Reynolds, 2001; Reeves et al., 1999; South Dakota: Reynolds, 2007; Tennessee: Zhang et al., 2010; Texas: Damoff et al., 2009; Wisconsin: Tiunov et al., 2006
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