1. T. Higashiki: Hikari Risogurafi Gijutu (Optical Lithography Technology) (ED Research, Tokyo, 2002) p. 17 [in Japanese].
2. H. Nomura: Dr. Thesis, School of Engineering, Tohoku University, Sendai (2007).
3. H. Nomura and Y. Furutono: Microelectron. Eng. 85 (2007) 1671.