Grosso, D., Boissiere, C., Smarsly, B., Brezesinski, T., Pinna, N., Albouy, P. A., Amenitsch, H., Antonietti, M., & Sanchez, C. (2004). Periodically ordered nanoscale islands and mesoporous films composed of nanocrystalline multimetallic oxides. Nature Materials, 3(11), 787-792. doi: 10.1038/nmat1206.