... This article has been cited by: 1. Bernd Giese, Hassan Farshchi, Jörg Hartmanns, Jürgen O. Metzger. 1991. ... Angewandte Chemie 103:10.1002/ange.v103:5, 619-620. [CrossRef] 2. Bernd Giese, Juan Antonio González-Gómez, Stephen Lachhein, Jürgen O. Metzger. ...