Pickering, Chris (June 2021). "Green Tech: Zero Petroleum"(PDF). Race Tech. 247: 48–55. Archived from the original(PDF) on 18 January 2022. Retrieved 28 August 2025.
Kenwood, Michael (March 2018). "A formula for success". Ingenia (74). Archived from the original on 13 August 2018. Retrieved 28 August 2025.
Pickering, Chris (June 2021). "Green Tech: Zero Petroleum"(PDF). Race Tech. 247: 48–55. Archived from the original(PDF) on 18 January 2022. Retrieved 28 August 2025.