6 citations as recorded by crossref.

1. Long-term variations of available solar radiation on seasonal timescales in 1955–2006 at Tartu-Tõravere Meteorological Station, Estonia K. Eerme et al. https://doi.org/10.1007/s00704-009-0226-6
2. Developing long-term monitoring of ozone in Estonia: the mandate of the Montreal Protocol O. Roots et al. https://doi.org/10.1080/01431160902825024
3. Modification of Spectral Ultraviolet Doses by Different Types of Overcast Cloudiness and Atmospheric Aerosol M. Aun et al. https://doi.org/10.1111/j.1751-1097.2011.00889.x
4. Remote sensing of climate change, long-term monitoring of air pollution and stone material corrosion in Estonia O. Roots et al. https://doi.org/10.1080/01431161.2011.574163
5. A Review of Protocols for Fiducial Reference Measurements of Downwelling Irradiance for the Validation of Satellite Remote Sensing Data over Water K. Ruddick et al. https://doi.org/10.3390/rs11151742
6. Study of suitability of AvaSpec array spectrometer for solar UV field measurements I. Ansko et al. https://doi.org/10.5194/acp-8-3247-2008