@conference {AbaBotEscHenKorKreLibMarMer-IFFP-2009,
	title = {The {I}ntergeo File Format in Progress},
	booktitle = {Proceedings of the 22nd OpenMath Meeting},
	year = {2009},
	abstract = {In this paper we describe the ongoing effort to specify a com- mon file format for Interactive or Dynamic Geometry Systems (DGS). Our approach is based on the OpenMath standard, and uses its flexible extension mechanisms like Content Dictionaries. We discuss the various design decisions, the Content Dictionaries that have been defined, as well as open questions to be resolved.},
	keywords = {Intergeo, refereed},
	author = {Ab{\'a}nades, Miguel and Botana, Francisco and Escribano, Jes{\'u}s and Hendriks, Maxim and Kortenkamp, Ulrich and Kreis, Yves and Libbrecht, Paul and Marques, Daniel and Mercat, Christian}
}
