1. C.H. Chen, J. Shi, K.P. Klubek, US patent 5,908,5811, 999
2. N. Komiya, R. Nishikawa, M. Okuyama. T. Yamada, Y.Saito, S. Oima, K. Yoneda, H. Kanno, H. Takahashi, G. Rareswaran, M. Itoh, M. Boroson, T.K. Hatwar, EL00, Hamamatsu, Japan, 4 December 2000, p. 31
3. Y. Hamada, H. Kanno, H. Jujii, T. Tsujioka, H. Takahashi, ACS Poly Millennial 2000 abstract, 2000, p. 347
4. S. Miyata, Organic electro-luminescence Device, PCT patent, WO 02/22760, 2002
5. C.Y. Iou, T.H. Liu, Y.S. Wu, H.H. Chen, C.H. Chen, IDMC 2003, 2003, p. 755