Metaxas Α., Georgakopoulos Α.Ν., Karageorgiou D.Μ.Μ., G. Papanikolaou, and E.D. Karageorgiou. “CO2 CONTENT OF GREEK LIGNITE: THE CASE OF PROASTIO LIGNITE DEPOSIT IN PTOLEMAIS BASIN, NORTHERN GREECE”. Bulletin of the Geological Society of Greece 43, no. 5 (January 1, 2010): 2274–2283. Accessed December 20, 2024. https://ejournals.epublishing.ekt.gr/index.php/geosociety/article/view/11427.