1. J. H. Knox, M. T. Gilbert, UK Patent 7939449 (1979), US Patent 4263268 (1979), FRG Patent P2946688-4 (1979).
2. J. H. Knox, B. Kaur, G. R. Millward, J. Chromatogr.352, 3 (1986).
3. J. H. Knox, B. Kaur, “High Performance Liquid Chromatography”, Ed. Hartwick and Brown, John Wiley & Sons, New York, 1989, Chapter 4.
4. H. L. Rothbart, “Introduction to Separation Science”, John Wiley & Sons, New York, 1967, Chapter 12.
5. L. R. Snyder, J. J. Kirkland, “Introduction to Modern Liquid Chromatography”, John Wiley & Sons, New York, 1974, Chapter 9.