1. Zhou D, Victor DG, Ahmed EHM, Dadhich PK, Olivier JGJ, Rogner H-H, Sheikho K, Yamaguchi M. Introductory chapter. In: Edenhofer O, Pichs-Madruga R, Sokona Y, Farahani ESK, Seyboth K, Adler A, et al., editors. Climate change 2014: mitigation of climate change. Contribution of Working Group III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge, UK; New York: Cambridge University Press; 2014. p. 111–68.
2. Each Country’s Share of CO2 Emissions. 2008. https://www.ucsusa.org/resources/each-countrys-share-co2-emissions. Accessed 25 Apr 2022.
3. Korotcenkov G, Cho BK. Metal oxide composites in conductometric gas sensors: achievements and challenges. Sensors Actuators B Chem. 2017;244:182–210.
4. Korotcenkov G, Han SD, Stetter JR. Review of electrochemical hydrogen sensors. Chem Rev. 2009;109:1402–33.
5. Yadav K, Gahlaut SK, Mehta BR, Singh JP. Photoluminescence based H2 and O2 gas sensing by ZnO nanowires. Appl Phys Lett. 2016;108(7):071602.