Sônia Virgínia Alves França,  Carlos André Guimarães Ferraz. 

This paper describes a model that allows heterogeneous Geographic Information Systems, distributed over wide area networks to communicate with each other, interoperating data and services. The model is based on distributed objects and agents technologies and on the OGIS standard, defining the concepts of GISTrader and Geoagents as components that enable interoperability between geoprocessing applications, as well as contribute to good performance when such applications are distributed over heterogeneous and wide area networks.

http://www.tecgraf.puc-rio.br/geoinfo2000/anais/016.pdf

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