1. Zwitterionic chiral stationary phases based on cinchona and chiral sulfonic acids for the direct stereoselective separation of amino acids and other amphoteric compounds. Issue 11 (13th April 2014) Authors: Zhang, Tong; Holder, Emilie; Franco, Pilar; Lindner, Wolfgang Journal: Journal of separation science Issue: Volume 37:Issue 11(2014:Jun.) Page Start: 1237 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗