1. Absorption Cross Sections of Ozone (ACSO) Status Report 2015 World Meteorological Organization, Research Department, Atmospheric Research and Environmental Branch, GAW Rep. 218 http://library.wmo.int/pmb_ged/gaw_218_en.pdf
2. ATMOZ 2013 European Metrology Research Program (EMRP), ENV59 ATMOZ: Traceability for atmospheric total column ozone http://projects.pmodwrc.ch/atmoz/
3. Basher , R. E. 1982 Review of the Dobson spectrophotometer and its accuracy Geneva
4. The GOME-type Total Ozone Essential Climate Variable (GTO-ECV) data record from the ESA Climate Change Initiative;Coldewey-Egbers;Atmos. Meas. Tech.,2015
5. EUBREWNET 2013 European Cooperation in Science and Technology: COST ES 1207-A European Brewer Network (EUBREWNET) http://www.eubrewnet.org/cost1207/