Adsorption equilibria of α- and δ-tocopherol from supercritical mixtures of carbon dioxide and 2-propanol onto silica by means of perturbation chromatography Lübbert, Matthias Brunner, Gerd Johannsen, Monika 2007 - TUHH Open Research
Separation of ibuprofen enantiomers by supercritical fluid simulated moving bed chromatography Peper, Stephanie Lübbert, Matthias Johannsen, Monika Brunner, Gerd 2002 - TUHH Open Research