Discovery of α7-Nicotinic Receptor Ligands by Virtual Screening of the Chemical Universe Database GDB-13. - Lorenz C. Blum; Ruud van Deursen; Sonia Bertrand; Milena Mayer; Justus J. Bürgi; Daniel Bertrand; Jean-Louis Reymond (J. Chem. Inf. Model., 2011)