Arts, DGT, de Keizer, NF and Scheffer, G-J (2002) Defining and improving data quality in medical registries: a literature review, case study, and generic framework. Journal of the American Medical Informatics Association 9: 600–611.
Chapman, AD (2005a) Principles of Data Quality, Version 1.0. Report for the Global Biodiversity Information Facility. Copenhagen: Global Biodiversity Information Facility, p. 58.
Chapman, AD (2005b) Principles and Methods of Data Cleaning – Primary Species and Species-Occurrence Data, Version 1.0. Report for the Global Biodiversity Information Facility. Copenhagen: Global Biodiversity Information Facility, p. 72.
Chapman, AD and Wieczorek, J (eds) (2006) Guide to Best Practices for Georeferencing. Copenhagen: Global Biodiversity Information Facility, p. 80.
EURISCO(2011b) EURISCO Descriptors for Uploading Information from National Inventories to EURISCO. Rome: ECPGR, p. 7.
FAO(2002) International Treaty on Plant Genetic Resources for Food and Agriculture. Rome: Food and Agricultural Organization of the UN, p. 45. .
GBIF(2011a) Global Biodiversity Information Facility Annual Report 2010. Copenhagen: Global Biodiversity Information Facility, p. 52. http://links.gbif.org/ar2010.pdf. GRINTax(2010) USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network (GRIN) Online Database. Beltsville, MD: National Germplasm Resources Laboratory. http://www.ars-grin.gov/cgi-bin/npgs .
ISO(1994) ISO 8402:1994 Quality Management and Quality Assurance – Vocabulary. Geneva: International Organization for Standardization.
van de Wouw, M, van Treuren, R and van Hintum, TJL (2011) Authenticity of old cultivars in genebank collections: a case study on lettuce. Crop Science 51: 736–746.
van Dooijeweert, W and Menting, F (2008) Improving the quality of passport data of a genebank collection: approaches at CGN. Plant Genetic Resources Newsletter 153: 20–27.
van Hintum, TJL (2000) Duplication within and between germplasm collections. III. A quantitative model. Genetic Resources and Crop Evolution 47: 507–513.
van Hintum, TJL and Knüpffer, H (2010) Current taxonomic composition of European genebank material documented in EURISCO. Plant Genetic Resources: Characterisation and Utilisation 8: 182–188.
Wieczorek, J, Guo, Q and Hijmans, RJ (2004) The point-radius method for georeferencing locality descriptions and calculating associated uncertainty. International Journal of Geographical Information Science 18: 745–767.