Waldmann, Herbert Abt. IV: Chemische Biologie, Max Planck Institute of Molecular Physiology, Max Planck Society;
Muller, R., Rottele, H., Henke, H., & Waldmann, H. (2000). Asymmetric steering of the mannich reaction with phthaloyl amino acids. CHEMISTRY-A EUROPEAN JOURNAL, 6(11), 2032-2043. doi:10.1002/1521-3765(20000602)6:11<2032:AID-CHEM2032>3.0.CO;2-B.