1. ISO 16703 (2004) Soil Quality – Determination of hydrocarbon content in the range of C10 to C40 by gas chromatography. ISO/TC 190/SC 3, 2004
2. prEN 14039 (2000) Determination of hydrocarbon content by GC in the range of C10–C40. Characterisation of waste. CEN/TC 292, 2000
3. EC/BCR GUIDELINES for feasibility studies on certified reference materials, EUR 20574 EN, 2002
4. ISO Guide 35 (3rd edition): Certification of reference materials – General and statistical principles. ISO/REMCO WG 1, 2003
5. Karstensen KH (1996) Nordic Guideline for chemical analysis of contaminated soil samples, Espoo 1996. Nordtest, NT Techn Report 329. 159 p. NT Project No. 1143-93