1. Cheong Wa Dae (2019a) Opening remarks by President Moon Jae-in at 2019 national fiscal strategy meeting. Cheong Wa Dae. https://english1.president.go.kr/Briefingspeeches/Speeches/595. Accessed 17 Dec 2019
2. Cheong Wa Dae (2019b) Remarks by President Moon Jae-in at presentation for hydrogen economy roadmap and Ulsan’s future energy strategy. Cheong Wa Dae. https://english1.president.go.kr/BriefingSpeeches/Speeches/110. Accessed 17 Dec 2019
3. Cho C (2018) Ulsan strives to become global hydrogen leader. The Korea Herald. http://www.koreaherald.com/view.php?ud=20181022000747. Accessed 12 Jan 2020
4. Edmond C (2019) South Korea is building 3 hydrogen-powered cities for 2022. World Economic Forum. https://www.weforum.org/agenda/2019/11/south-korea-green-energy-hydrogen-future-city-fossil-fuel-renewables/. Accessed 10 Feb 2020
5. Energy Policy Institute at the University of Chicago (2019) South Korea analysis: air pollution cuts lives short by more than a year. Energy Policy Institute at the University of Chicago, Chicago. Accessed 22 Mar 2020