A. Kaumann, S. Engelhardt, L. Hein, P. Molenaar, and M. Lohse. Naunyn Schmiedebergs Arch Pharmacol, 363 (1):
87-93(January 2001)Kaumann, A J Engelhardt, S Hein, L Molenaar, P Lohse, M Comparative
Study In Vitro Research Support, Non-U.S. Gov't Germany Naunyn-Schmiedeberg's
archives of pharmacology Naunyn Schmiedebergs Arch Pharmacol. 2001
Jan;363(1):87-93..