@conference {,
	title = {Review of UAV positioning in indoor environments and new proposal based on US},
	booktitle = {International Conference on Indoor Positioning and Indoor Navigation },
	year = {2019},
	month = {10/2019},
	pages = {1-8},
	publisher = {IPIN},
	organization = {IPIN},
	address = {Pisa, Italia},
	isbn = {978-1-7281-1788-1},
	author = {M.C.P{\'e}rez and D. Gulada and J. de Vicente and J. M. Villadangos and Ure{\~n}a, J.}
}
