@inproceedings{4c1b673604ee4c619bd83e36f6acaeaf,
title = "Volunteered geographic information: the nature and motivation of produsers",
keywords = "PGM, ADLIB-ART-1671",
author = "D.J. Coleman and P.Y. Georgiadou and J. Labonte",
year = "2009",
language = "English",
booktitle = "Proceedings of the GSDI 11 World Conference : Spatial data infrastructure convergence : building SDI bridges to address global challenges, June 15-19, 2009, Rotterdam, The Netherlands. 20 p.",
publisher = "Global Spatial Data Infrastructure",
}