Sekkat, Z., Wood, J., Geerts, Y., El Meskini, A., Büchel, M., & Knoll, W. (1996). Organized photochromic azo-polymeric structures: Self-assembled and Langmuir-Blodgett-Kuhn layers. Synthetic Metals, 81(2-3), 281-285. doi:10.1016/S0379-6779(96)03739-3.