Sekkat, Z., Kang, C. S., Aust, E. F., Wegner, G., & Knoll, W. (1995). ROOM-TEMPERATURE PHOTOINDUCED POLING AND THERMAL POLING OF A RIGID MAIN-CHAIN POLYMER WITH POLAR AZO DYES IN THE SIDE-CHAIN. Chemistry of Materials, 7(1), 142-147. doi:10.1021/cm00049a022.