The Scaffold Tree - Visualization of the Scaffold Universe by Hierarchical Scaffold Classification. - Ansgar Schuffenhauer; Peter Ertl; Silvio Roggo; Stefan Wetzel; Marcus A. Koch; Herbert Waldmann (J. Chem. Inf. Model., 2007)

Natural Product-likeness Score and Its Application for Prioritization of Compound Libraries. - Peter Ertl; Silvio Roggo; Ansgar Schuffenhauer (J. Chem. Inf. Model., 2008)