Optical properties of organic thin films of 4-tricyanovinyl-N, N-diethylanilineM. M. El-Nahass, K. F. Abd-El-Rahman and A. A. A. DarwishEur. Phys. J. Appl. Phys., 48 2 (2009) 20402DOI: https://doi.org/10.1051/epjap/2009154