1. WorldBank. Récupéré sur (September, 2018). https://www.banquemondiale.org/fr/news/press-release/2018/09/20/global-waste-to-grow-by-70-percent-by-2050-unless-urgent-action-is-taken-world-bank-report
2. World Health Organization, Récupéré sur (2021) https://www.who.int/emergencies/diseases/novel-coronavirus-2019
3. Sharma, P., Dhar, A.: Effect of hydrogen supplementation on engine performance and emissions. Int. J. Hydrogen Energy 43(15), 7570–7580 (2018). https://doi.org/10.1016/j.ijhydene.2018.02.181
4. Boumahrou, L. [Environnement] Le COVID-19 a donné un répit à la planète, (April, 2020), https://www.ecoactu.ma/le-covid-19-repit-planete/
5. Saadat S., Rawtani D., Hussain C.M., Environmental perspective of COVID 19, Science of the Total Environment 728, (2020), https://doi.org/10.1016/j.scitotenv.2020.138870