@proceedings {DBLP:conf/gis/2018,
	title = {Proceedings of the 26th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, SIGSPATIAL 2018, Seattle, WA, USA, November 06-09, 2018},
	year = {2018},
	publisher = {ACM},
	isbn = {978-1-4503-5889-7},
	url = {http://dl.acm.org/citation.cfm?id=3274895},
	editor = {Farnoush Banaei Kashani and Erik G. Hoel and Ralf Hartmut G{\"u}ting and Roberto Tamassia and Li Xiong}
}
@proceedings {DBLP:conf/gis/2017,
	title = {Proceedings of the 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, GIS 2017, Redondo Beach, CA, USA, November 7-10, 2017},
	year = {2017},
	publisher = {ACM},
	isbn = {978-1-4503-5490-5},
	url = {http://dl.acm.org/citation.cfm?id=3139958},
	editor = {Erik G. Hoel and Shawn D. Newsam and Siva Ravada and Roberto Tamassia and Goce Trajcevski}
}
