1. 1. M. Dusa, et. al., "Pitch Doubling Through Dual-Patterning Lithography Challenges in Integration and Litho Budgets", Proc. SPIE 6520, 65200G/1-65200G/10, 2007.
2. 2. Y. Ohmura, Presentation at SEMI Technology Symposium, held in Chiba (SEMI), December 2007.
3. 3. H. Nagasaka, Presentation at SEMI Technology Symposium, held in Chiba (SEMI), December 2005.
4. 4. R. R. Dammel, G. Pawlowski, A. Romano, F. M. Houlihan, W.-K. Kim, R. Sakamuri and D. Abdallah, Proc. SPIE. 5753, pp. 95-101, 2005.
5. 5. H. Tsuji, M. Yoshida, K. Ishizuka, T. Hirano, K. Endo and M. Sato, Proc. SPIE 5753, pp. 102-108, 2005.