“Photoelektronentransfer-induzierte intramolekulare [2+2]-Cycloadditionen von 2,2´-Bis(1-arylvinyl)biphenyl" Oliver Sadlek, Klaus Gollnick, Kurt Polborn and Axel G. Griesbeck Angew. Chem. 1994, 106, 2399-2400; Angew. Chem. Int. Ed. Engl. 1994, 33, 2300-2301.
“Photoinduced Electron Transfer (PET) Cyclization and Photooxygenation of 2,6-Diaryl-1,6-heptadienes and 2,7-Diaryl-1,7-octadienes" Axel G. Griesbeck, Oliver Sadlek and Kurt Polborn Liebigs Ann. 1996, 545-549.