Kling, Andreas; Lange, Udo E. W.; Mack, Helmut; Bakker, Margot H. M.; Drescher, Karla U.; Hornberger, Wilfried; Hutchins, Charles W.; Moeller, Achim; Mueller, Reinhold; Schmidt, Martin; Unger, Liliane; Wicke, Karsten; Schellhaas, Kurt; Steiner, Gerd Bioorganic and Medicinal Chemistry Letters, 2005 , vol. 15, # 24 p. 5567 - 5573