<https://www.itu.int/en/ITU-T/focusgroups/dfs/Documents/201701/ITU_FGDFS_DFS-Glossary.pdf> _______________________
<https://www.itu.int/en/ITU-T/focusgroups/dfs/Documents/201701/ITU_FGDFS_DFS-Glossary.pdf> _______________________
10-5-2018--19h1min37s-Recomenda%C3%A7%C3%A3o_MFS.docx