- Austria
- Christian and Zicsi, 1999
- Canada
- British Columbia: Reynolds, 1995; New Brunswick: Reynolds, 1995; Ontario: Reynolds, 1995; Quebec: Reynolds, 1975d, 1975e, 1976c; Reynolds and Reynolds, 1992
- Denmark
- Blakemore, 2007
- Finland
- Terhivuo, 1988b
- France
- Bouche, 1972
- Norway
- Blakemore, 2007.
- Spain
- Diaz Cosin et al., 1992
- Sweden
- Blakemore, 2007
- United Kingdom
- Sims and Gerard, 1999; Scotland: Carpenter, 2011
- United States
- Vermont: Reynolds, 1995
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Data are not exhaustive. The database is permanently a work in progress.