Niecke, Edgar; Filippou, Alexander C. (2012). "Rolf Appel (1921–2012)". Angewandte Chemie International Edition. 51 (37): 9216. doi:10.1002/anie.201205250.
Rolf Appel (1975). "Tertiary Phosphane/Tetrachloromethane, a Versatile Reagent for Chlorination, Dehydration, and P-N Linkage". Angewandte Chemie International Edition in English. 14 (12): 801–811. doi:10.1002/anie.197508011.