Chen, C.; Duan, S.; Cai, T.; Liu, B.; Hu, G.: 'Smart energy management system for optimal microgrid economic operation', IET Renewable Power Generation, 2011, 5, (3), p. 258-267, DOI: 10.1049/iet-rpg.2010.0052 IET Digital Library, https://digital-library.theiet.org/;jsessionid=bp30aobkclesc.x-iet-live-01content/journals/10.1049/iet-rpg.2010.0052