Glaudinei Mendonça Júnior,  Joaquim Bento Cavalcanti Neto,  Creto Vidal. 

Virtual Environments join users to interact among themselves and with the world to accomplish tasks. All elements in virtual environments that interact are called entities. These interactions, along with personal entities behaviors, enrich virtual environments making them more efficient. This paper introduces a model, called BeE Model, intended to design behaviors.

http://www.lbd.dcc.ufmg.br/colecoes/svr/2006/058.pdf

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