1. ISBT Carbon Dioxide Quality Guidelines and Analytical Procedure Bibliography, International Society of Beverage Technologists, USA, March 2001.
2. R.L. Firor, B.D. Quimby, Analysis of Trace Sulfur Compounds in Beverage Grade Carbon Dioxide, Agilent Technologies Inc., USA, April 2, 2001.
3. Surface processes in the detection of reducing gases with SnO2-based devices;Kohl;Sens. Actuators,1989
4. S.R. Morrison, Chemical sensors, in: S.M. Sze (Ed.), Semiconductor Sensors, Wiley, USA, 1994, pp. 383–413.
5. S.H. Hahn, N. Bârsan, U. Weimar, S.G. Ejakov, J.H. Visser, R.E. Soltis, Oxygen and water interactions at the surface of SnO2 based sensors, in: Proceedings of Eurosensors XVI, The 16th European Conference on Solid-state Transducers, Prague, Czech Republic, September 15–18, 2002, pp. 952–955.