@article {leterme2016local,
	title = {A local backup protection algorithm for HVDC grids},
	journal = {IEEE Transactions on Power Delivery},
	volume = {31},
	number = {4},
	year = {2016},
	pages = {1767{\textendash}1775},
	publisher = {IEEE},
	author = {Leterme, Willem and Azad, Sahar Pirooz and Van Hertem, Dirk}
}