
https://iea.blob.core.windows.net/assets/ada7af90-e280-46c4-a577-df2e4fb44254/Renewables2022.pdf

https://www.dhl.com/content/dam/dhl/global/dhl-spotlight/documents/pdf/2021-gci-update-report.pdf

https://ecipe.org/blog/second-hamiltonian-moment/?mc_cid=cdc41ebfc8&mc_eid=286ad5ef5f