@conference {, title = {Study of Cooperative Position Estimations of Mobile Robots}, booktitle = {2017 International Conference on Indoor Positioning Systems}, year = {2017}, month = {09/2017}, pages = {1-10}, address = {Sapporo ,Jap{\'o}n}, url = {http://www.ipin2017.org/proceedings.php}, author = {Gualda, D and Ure{\~n}a, J. and J.C. Garcia and Mar{\'\i}a del Carmen Perez and E. Diaz} }