1. Canadian environmental sustainability indicators:Greenhouse gas emissions;Environment and Climate Change Canada,2018
2. Clean fuel standard, regulatory design paper;Environment and Climate Change Canada,2018
3. Hydrogen scaling up;Hydrogen Council,2017
4. Basic hydrogen strategy;Ministerial Council on Renewable Energy Hydrogen and Related Issues,2017
5. 2018 annual evaluation of fuel cell electric vehicle deployment & hydrogen fuel station network development;California Air Resources board,2018