1. H. Hagestam, T. C. Pinkerton, Anal. Chem.57, 1757 (1985).
2. S. E. Cook, T. C. Pinkerton, ISRP application Note No. 3, Regis Chemical Company, Morton Grove, IL, May 15, (1986).
3. T. J. Szczerba, J. A. Perry, ISRP application Note No. 14, Regis Chemical Company, Morton Grove, IL, August 23, (1986).
4. S. C. Ruckmick, B. D. Hench, J. Chromatogr.565, 277 (1991).
5. A. Puhlmann, T. Dülffer, U. Kobold, J. Chromatogr.581, 129 (1992).