Houk, K. N.; List, B.: Asymmetric Organocatalysis, Accounts of Chemical Research 37, p. 487 - 487 (2004)

List, B.: Organocatalysis: A Complementary Catalysis Strategy Advances Organic Synthesis, Advanced Synthesis & Catalysis 346, p. 1021 - 1021 (2004)

Lehmann, C. W.: Frank H. Herbstein: Crystalline Molecular Complexes and Compounds, Vol. 1 and 2; Oxford: Oxford University Press, 2005. ISBN: 9780198526605. Acta Crystallographica Section B 62 (2), pp. 338 - 339 (2006)