TY - JOUR T1 - A Review of Circular Economy Research for Electric Motors and the Role of Industry 4.0 Technologies JO - Sustainability PY - 2021/09/01 AU - Tiwari D AU - Miscandlon J AU - Tiwari A AU - Jewell GW ED - DO - DOI: 10.3390/su13179668 PB - MDPI AG VL - 13 IS - 17 SP - 9668 EP - 9668 Y2 - 2025/05/23 ER -