Roberto Casas, David Cuartielles, Jorge L. Falcó, Lone Malmborg. Positioning Technologies in Learning. In Marcelo Milrad, Heinz Ulrich Hoppe, Kinshuk, editors, Proceedings IEEE International Workshop on Wireless and Mobile Technologies in Education, August 29-30, 2002, Växjö, Sweden. pages 161-162, IEEE Computer Society, 2002. [doi]