1. Introduction to helium mass spectrometer leak detection. Varian vacuum products, Lexington, USA, 1995.
2. Introduction to mass spectrometry;Robotz,1968
3. EN 1330-8:1998. Non-destructive testing—Terminology—part 8: terms used in leak tightness testing. May 1998.
4. EN 1518:1998. Non-destructive testing—leak testing—characterization of mass spectrometer leak detectors. April 1998.
5. EN 1593:1999/A1: 2003. Non-destructive testing—leak testing—bubble emission techniques. December 2003.