1. S. Rogozhin, V. Davankov, German patent 1 932 190 (1970); C.A. 72 (1970) 90875c.
2. Ligand Exchange Chromatography;Davankov,1988
3. V. Davankov, in: A. Krstulovic (Ed.), Chiral Separations by HPLC, Applications to Pharmaceutical Compounds, Ellis Horwood, Chichester, 1989, pp. 175, 446.