Source: https://www.researchgate.net/profile/Thomas-Clair/publication/237154392_Liming_for_the_mitigation_of_acid_rain_effects_in_freshwaters_A_review_of_recent_results/links/00b4952961b5ad36d9000000/Liming-for-the-mitigation-of-acid-rain-effects-in-freshwaters-A-review-of-recent-results.pdf