Optimized poling of nonlinear optical polymers based on dipole-orientation and dipole-relaxation studies - Ren, W.; Bauer, S.; Yilmaz, S¸.; Wirges, W.; Gerhard-Multhaupt, R. (American Institute of Physics (AIP), 1994)
http://dx.doi.org/10.1063/1.356676
Keywords: U