1. Hydrogen sensor workshop,2007
2. Vehicular fuel systems code;National Fire Protection Association, NFPA 52,2006
3. Sensors, chemical sensors, electrochemical sensors and ECS;Stetter;J Electrochem Soc,2003
4. UL standard for safety for gas and vapor detectors and sensors, UL 2075;Underwriters Laboratory,2004
5. Hydrogen detection apparatus, ISO/TC 197 / WG 13 DIS 26142.