1. International Union of Pure and International Federation of Clinical Chemistry Compendium of terminology and nomenclature of properties in clinical laboratory sciences The Silver Book Oxford;Blackwell;Applied Chemistry,1995
2. National Board of LabInfo http www labinfo dk English ifcc iupac uk asp;Denmark;Health
3. International Union of Pure and International Federation of Clinical Chemistry Compendium of terminology and nomenclature of properties in clinical laboratory sciences The Silver Book Oxford;Blackwell;Applied Chemistry,1995