@Inproceedings\{BrunoMartins_2_2010,
author = {Bruno Martins and Pável Calado},
title = {Learning to Rank for Geographic Information Retrieval},
booktitle = {6th Workshop on Geographic Information Retrieval},
publisher = {ACM},
location = {Zurich, Switzerland},
year = {2010},
month = {February},
}