@incollection{reference/gis/FilhoB08a,
title = {Unified Modeling Language Extension Mechanisms.},
author = {Jugurta Lisboa Filho and José Luís Braga},
booktitle = {Encyclopedia of GIS},
crossref = {reference/gis/2008},
editor = {Shashi Shekhar and Hui Xiong},
pages = {1196-1197},
publisher = {Springer},
url = {http://dblp.uni-trier.de/db/reference/gis/gis2008.html#FilhoB08a},
year = {2008},
description = {dblp},
date = {2008-04-14}, ee = {http://dx.doi.org/10.1007/978-0-387-35973-1_1427}, isbn = {978-0-387-30858-6},
keywords = {dblp }
}
::