1. S. H. Bae, S. R. In, G. H. Jeong, Y. B. Lee, and Y. H. Shin, Vacuum Engineering (Korea Economic Daily Hankyung BP, Seoul, 2000), pp. 61–116, 153–154.
2. S. M. Jeong, J. W. Lee, and J. Y. Park, Introductory Vacuum Science & Technology (Chungmungak, Seoul, 2001), pp. 141–153.
3. C.D. Park, S.M. Chung, D.J. Seong, Y.H. Shin, K.H. Chung, J. Korean Phys. Soc. 51, 912 (2007)
4. S.S. Hong, Y.H. Shin, K.H. Chung, K. Jousten, J. Korean Phys. Soc. 44, 1364 (2004)
5. ISO 21360-1: Vacuum Technology - Standard methods for measuring vacuum pump performance - Part 1: General description, (2012).