Rodrigo Laiola Guimarães Romualdo Monteiro de Resende Costa Luiz Fernando Gomes Soares Composer: Authoring Tool for iTV Programs. 61-71 2008 EuroITV http://dx.doi.org/10.1007/978-3-540-69478-6_7 conf/euroitv/2008 db/conf/euroitv/euroitv2008.html#GuimaraesCS08