@article {,
	title = {A review of techniques for ultrasonic indoor localization systems},
	journal = {The Journal of the Acoustical Society of America },
	volume = {145},
	year = {2019},
	month = {03/2019},
	pages = {1884-18894},
	publisher = {ASA},
	address = {EEUU},
	issn = {1040-8090},
	doi = {doi.org/10.1121/1.5101825},
	author = {J. Aparicio and F. J. {\'A}lvarez and {\'A}. Hern{\'a}ndez and S. Holm}
}
