Zhang, N. ., and T. . Feng. “Two-Stage Multi-Objective Optimization Coordination of Electro-Thermal Coupled Integrated Energy System Based on Improved NSGA-II Algorithm”. Distributed Generation &Amp; Alternative Energy Journal, vol. 38, no. 06, Aug. 2023, pp. 1707-40, doi:10.13052/dgaej2156-3306.3861.