@conference {,
	title = {A review of techniques for ultrasonic indoor localization systems},
	booktitle = {The Journal of Acoustical Society of America},
	volume = {145},
	year = {2019},
	month = {03/2019},
	pages = {1884-1884},
	address = {EEUU},
	doi = {https://doi.org/10.1121/1.5101825},
	author = {J.Aparicio and F.J. Alvarez and A. Hernandez and S. Holm}
}
