1. Photocatalytic Reduction of CO2on TiO2and Other Semiconductors
2. NOAA Earth System Research Laboratory Global Monitoring Division – Trends in Atmospheric Carbon Dioxide – Monthly Average Mauna Loa CO 2 . 2020
3. NOAA Earth System Research Laboratory Global Monitoring Division – Trends in Atmospheric Carbon Dioxide – Annual Mean Growth Rate for Mauna Loa, Hawaii. https://www.esrl.noaa.gov/gmd/ccgg/trends/full.html
4. M. M. Halmann and M.Steinberg , Greenhouse Gas Carbon Dioxide Mitigation: Science and Technology , CRC Press LLC, Lewis Publishers , 1999
5. Powering the planet: Chemical challenges in solar energy utilization