Fieducik, Jolanta, and Jan Godlewski. “An Analysis of Solar Energy Conversion Systems Based on Photon and Thermal Processes”. Geology, Geophysics and Environment 42, no. 4 (May 14, 2017): 403. Accessed November 21, 2024. https://ggae.agh.edu.pl/index.php/geol/article/view/2175.