1. , , , Practical HPLC Method Development, 2nd. ed., Wiley-Interscience, New York 1997, Chapter 8.
2. , , Gradient Elution in Column Liquid Chromatography, Elsevier, Amsterdam 1985.
3. in (Valko, K., ed.) Separation Methods in Drug Synthesis and Purification, Elsevier, Amsterdam 2000, pp. 1-71.