TY - JOUR T1 - Optimization of Pollutant Discharge Permits, Using the Trading Ratio System: A Case Study JO - Earth UR - http://dx.doi.org/10.3390/earth3030046 PY - 2022/07/02 AU - Taheriyoun M AU - Marzban H AU - Geranmehr M AU - Nazari-Sharabian M ED - DO - DOI: 10.3390/earth3030046 PB - MDPI AG VL - 3 IS - 3 SP - 814 EP - 824 Y2 - 2024/12/28 ER -