@conference {743,
	title = {Optimal test-point positions for calibrating an ultrasonic LPS system},
	booktitle = {13th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2008)},
	year = {2008},
	month = {09/2008},
	pages = {338-344},
	author = {Daniel Ruiz and Ure{\~n}a, J. and Jos{\'e} Manuel Villadangos and Gude, I. and J.J. Garcia and {\'A}lvaro Hern{\'a}ndez and Ana Jimenez}
}
