D. Ukena, C. Schirren, K. Klotz, and U. Schwabe. Naunyn Schmiedebergs Arch Pharmacol, 331 (1):
89-95(October 1985)Ukena, D Schirren, C G Klotz, K N Schwabe, U In Vitro Germany, west
Naunyn-Schmiedeberg's archives of pharmacology Naunyn Schmiedebergs
Arch Pharmacol. 1985 Oct;331(1):89-95..