P.E. Fanta. The Ullmann Synthesis of Biaryls. „Synthesis”. 1974, s. 9-21, 1974. DOI: 10.1055/s-1974-23219. (ang.).
F. Ullmann, Jean Bielecki. Ueber Synthesen in der Biphenylreihe. „Chemische Berichte”. 34 (2), s. 2174–2185, 1901. DOI: 10.1002/cber.190103402141. (ang.).
J. Hassan, M. Sevignon, C. Gozzi, E. Schulz, M. Lemaire. Aryl-Aryl Bond Formation One Century after the Discovery of the Ullmann Reaction. „Chemical Reviews”. 102, s. 1359–1470, 2002. DOI: 10.1002/cber.190103402141. (ang.).
Wang, Zhiming, Bao, Weiliang, Jiang, Yong. l-Proline promoted Ullmann-type reaction of vinyl bromides with imidazoles in ionic liquids. „Chemical Communications”, s. 2849-2851, 2005. DOI: 10.1039/B501628B.