1. Statistical review of world energy – all data,1965
2. The role of renewable energy in the global energy transformation;Gielen;Energ Strat Rev,2019
3. A fundamental look at supply side energy reserves for the planet;Perez,2015
4. Performing while transforming, from an international oil company to an integrated energy company, bp annual report and form 20-F,2020
5. The sustainable energy in America 2021 factbook,2021