1. De Re Metallica;Agricola,1912
2. Mining, Ecological Engineering and Metals Extraction for the 21st Century. Subject: Environmental Issues and Problems, Environmental Engineering, Sustainability and Solutions;Kalin,2018
3. CASE STUDY: 20 YEARS OF ACID ROCK DRAINAGE CHEMISTRY IMPROVEMENTS AFTER A BACTERICIDE APPLICATION
4. The International Network of Acid Prevention, Global Acid Rock Drainage Guidehttp://www.gardguide.com/images/5/5f/TheGlobalAcidRockDrainageGuide.pdf