1. 1) A. Kinbara: Supattaringu Genshou (Sputtering Phenomena) (Univ. Tokyo Press, Tokyo, 1984) p. 120 [in Japanese].
2. 2) H. Kobayashi: Supatta Hakumaku, Kiso to Ouyou (Sputter Thin Films, Basics and Applications) (Nikkan Kogyo Shinbun, Tokyo, 1993) p. 90 [in Japanese].
3. 3) W. D. Westwood: Sputter Deposition (AVS, New York, 2003) p. 203, p. 260.
4. 4) D. Depla and S. Mahieu: Reactive Sputter Deposition (Springer, Berlin, 2008) p. 1.
5. 5) J. Heller: Thin Solid Films, 17 (1973) 163.