1. Matrix effects in clinical analysis: commutability of control materials between the Ektachem, Beckman and SMA 12/60 glucose and urea methods;Clark;Clin Chim Acta,1981
2. Commutability of reference materials in clinical chemistry;Franzini;JIFCC,1993
3. BIPM, IFC, IIFCC, ISO, TUPAC, LUPAP, OIML. International vocabulary of basic and general terms in metrology. ISO 2nd ed. Switzerland, 1993.
4. Commutability between stabilized materials and human serum in serum creatinine testing;Ricós;Quim Clin,1995
5. Commutability between stabilized materials and human serum cholesterol, glucose, urate and urea testing;Minchinela;Quim Clin,1995