- Belgium
- Rota (FE)
- Canada
- Ontario: Reynolds, 1977, 1995; Reynolds and Wetzel, 2004
- Czech Republic
- Rota (FE)
- Denmark
- Blakemore, 2007
- France
- Bouche, 1972
- Germany
- Lehmitz et al., 2014
- Ireland
- Blakemore, 2008
- Italy
- Paoletti et al., 2013
- Malawi
- Kaonga and Monjerezi, 2012
- Portugal
- Rota (FE)
- Romania
- Rota (FE)
- Russia
- Perel, 1979; Perel-Vsevolodova, 1997; Blakemore, 2007c
- Switzerland
- Le Bayon et al., 2013
- The Netherlands
- Rota (FE)
- United Kingdom
- Sims and Gerard, 1999; Blakemore, 2008
- United States
- New York: Reynolds, 1995; Reynolds and Wetzel, 2004, 2008
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Data are not exhaustive. The database is permanently a work in progress.