1. International Federation of clinical chemistry. Approved Recommendation on the Theory of Reference Values. Part I to VI. J Clin Chem Clin Biochem 1987;25:337–342; J Clin Chem Clin Biochem 1987;25:639–644; J Clin Chem Clin Biochem 1987;25:645–656; J Clin Chem Clin Biochem 1987;25:657–662; J Clin Chem Clin Biochem 1988;26:593–598; J Clin Chem Clin Biochem 1991;29:531–535.
2. Queraltó Compañó J.M., dir. Teorı́a de los valores de referencia. Documentos de la Comisión de Valores de Referencia. Barcelona: SEQC, 1993.
3. On the reliability of published reference limits;Fuentes-Arderiu;Eur J Clin Chem Clin Biochem,1996
4. A simple method of resolution of a distribution into Gaussian components;Bhattacharya;Biometrics,1967
5. The use of patient data for the calculation of reference values for some haematological parameters;Naus;J Clin Chem Clin Biochem,1980