UNE-EN 61937-6:2006/A1:2014 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 6: Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4 AAC formats (Endorsed by AENOR in July of 2014.)
2014UNE-EN 61937-6:2006/A1:2014 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 6: Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4 AAC formats (Endorsed by AENOR in July of 2014.)
2006UNE-EN 61937-6:2006 Digital Audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 -- Part 6: Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4 AAC audio formats (IEC 61937-6:2006) (Endorsed by AENOR in October of 2006.)