Fitzky, B. U., Witsch-Baumgartner, M., Erdel, M., Lee, J. N., Paik, Y., Glossmann, H., . . . Moebius, F. F. (1998). Mutations in the Δ7-sterol reductase gene in patients with the Smith–Lemli–Opitz syndrome. National Academy of Sciences.

Fitzky, Barbara U., Martina Witsch-Baumgartner, Martin Erdel, Joon No Lee, Young-Ki Paik, Hartmut Glossmann, Gerd Utermann, et Fabian F. Moebius. Mutations in the Δ7-sterol Reductase Gene in Patients With The Smith–Lemli–Opitz Syndrome. National Academy of Sciences, 1998.

Fitzky, Barbara U., et al. Mutations in the Δ7-sterol Reductase Gene in Patients With The Smith–Lemli–Opitz Syndrome. National Academy of Sciences, 1998.