Simon, P., Zahn, D., Lichte, H., & Kniep, R. (2006). Intrinsic Electric Dipole Fields and the Induction of Hierarchical Form Developments in Fluorapatite-Gelatine Nanocomposites: A General Principle for Morphogenesis of Biominerals? Angewandte Chemie, 118(12), 1945-1949. doi:10.1002/ange.200504465.