1. Fernando Aragón-Durand (Mexico), Wolfgang Cramer (France/Germany), Stephen Humphreys (UK/ Ireland), Mikiko Kainuma (Japan), Jatin Kala (Australia), Natalie Mahowald (USA), Yacob Mulugetta (UK/Ethiopia), Rosa Perez (Philippines), Morgan Wairiu (Solomon Isl KZ (Canada/ G, Contributing. Framing and Context Coordinating n.d.
2. Impacts of 1.5°C of Global Warming on Natural and;Uk;Human Systems,2018
3. European Environment Agency n.d. https://www.eea.europa.eu/themes/transport/heavy-duty-vehicles (accessed January 10, 2020).
4. IEA (2020), Outlook for biogas and biomethane: Prospects for organic growth, IEA, Paris. n.d.
5. Impact of nitrogen oxides on the environment and human health: Mn-based materials for the NOx abatement;Boningari;Curr Opin Chem Eng,2016