Lerner, Christian; Masjost, Birgit; Ruf, Armin; Gramlich, Volker; Jakob-Roetne, Roland; Zuercher, Gerhard; Borroni, Edilio; Diederich, Francois Organic and Biomolecular Chemistry, 2003, vol. 1, # 1 p. 42 - 49 doi: 10.1039/b208690p