Martin Doerr Manos Papagelis A Method for Estimating the Precision of Placename Matching. 1089-1101 2007 19 IEEE Trans. Knowl. Data Eng. 8 http://doi.ieeecomputersociety.org/10.1109/TKDE.2007.1033 db/journals/tkde/tkde19.html#DoerrP07