Zhao, Shuqiang; Li, Ren; Gao, Benfeng; Wang, Nan; Zhang, Xi: 'Subsynchronous oscillation of PV plants integrated to weak AC networks', IET Renewable Power Generation, 2019, 13, (3), p. 409-417, DOI: 10.1049/iet-rpg.2018.5659
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1ab277u70s34i.x-iet-live-01content/journals/10.1049/iet-rpg.2018.5659