- Albania
- Szederjesi and Csuzdi, 2012b
- Belgium
- Hlava and Kopecky, 2013
- Bulgaria
- Zicsi and Csuzdi, 1986b; Szederjesi, 2012
- Czech Republic
- Svarc and Kula, 2011
- Denmark
- Blakemore, 2007
- France
- Bouche, 1972
- Greece
- Szederjesi and Csuzdi, 2012
- Romania
- Pop V.V., 2012.
- Russia
- Perel, 1979; Perel-Vsevolodova, 1997; Blakemore, 2007c; Kamchatka: Shekhovtsov et al., 2014
- Serbia
- Milutinovic, 2010
- Spain
- Diaz Cosin et al., 1992
- Sweden
- Blakemore, 2007
- Turkey
- Omodeo and Rota, 1989, 1991
- Ukraine
- Rota and Erseus, 1997.
- United Kingdom
- Sims and Gerard, 1999
- United States
- Alaska: Bowser et al., 2013; Oregon: Reynolds, 1995; Washington: Reynolds, 1995
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Data are not exhaustive. The database is permanently a work in progress.