@conference {,
	title = {Underwater Acoustic Relative Positioning System Based on Complementary Set of Sequences. },
	booktitle = {International Conference on Indoor Positioning and Indoor Navigation (IPIN{\textquoteright}11). },
	volume = {1},
	year = {2011},
	month = {09/2011},
	pages = {1-4},
	publisher = {IEEE},
	organization = {IEEE},
	chapter = {1},
	address = {Guimaraes, Porugal },
	isbn = {978-1-4577-0086-6 },
	doi = {10.1109/Oceans-Spain.2011.6003515},
	author = {J.Ure{\~n}a and C.Diego and J.Aparicio and Jimenez, A. and F. J. Alvares and C. de Marziani}
}
