books.google.com - This book presents a general picture of research-driven activities related to location- and map-based services. This type of research has emerged in recent years in the areas of positioning, spatial modeling, and cartographic communication as well as in the emerging fields of ubiquitous cartography,...http://books.google.com/books/about/Location_Based_Services_and_TeleCartogra.html?id=fkFg_h5prDoC&utm_source=gb-gplus-shareLocation Based Services and TeleCartography