Witte, Patrick; Beuerle, Florian; Hartnagel, Uwe; Lebovitz, Russell; Savouchkina, Anastasia; Sali, Sevda; Guldi, Dirk; Chronakis, Nikos; Hirsch, Andreas Organic and Biomolecular Chemistry, 2007 , vol. 5, # 22 p. 3599 - 3613