@inbook{3fb27989f2d14968a4c50aa47a74359c,
title = "Exploring the potential of volunteered geographic information for modeling spatio-temporal characteristics of urban population: A case study for Lisbon Metro using foursquare check-in data",
author = "Freire, {S{\'e}rgio Manuel Carneiro}",
year = "2011",
month = jan,
day = "1",
language = "Unknown",
isbn = "978-972-96524-6-2",
series = "7thVCT",
publisher = "Lisboa",
pages = "1--10",
booktitle = "Proceedings of the 7th International Conference on Virtual Cities and Territories",
note = "7th Virtual Cities and Territories ; Conference date: 01-01-2011",
}