3Khan T H,Paul T K,Shahabuddin G M,et al.Towards design of a smart prepaid gas metering system[C] // International Conference on Innovations in Information Technology.2009:55-59.
6POLLARD J Y, RAY P, BELEC Y. GrDF asset manage- ment strategy new tools for risk, investment and mainte-nance management [ C ]// International Gas Union. 24th World Gas Conference. Buenos Aires (Argentina) : International Gas Union, 2009:360 - 381.
7POLLARD J Y. Development of safety management processes: feedback, analysis of human and organization factors, and creation of simulator to enhance collectives [ C ]// International Gas Union. 25th World Gas Con- ference. Kuala Lumpur (Malaysia) : International Gas U- nion, 2012:456 -468.
8DROCHON I, VERCAMER P. Approach for the imple- mentation of AMR system for gas meters in France - GrDF AMR Project [ C ]// International Gas Union. 25th World Gas Conference. Kuala Lumpur (Malaysia) : International Gas Union, 2012:679-712.