To understand the structure of the file, you can reference the specification, which uses the .m3u8 variant (a UTF-8 version of M3U).
Files like 0010-2-tv.m3u are often associated with unofficial IPTV services. Be careful when downloading or opening these files from unknown websites, as they can contain links to malicious content or be designed to exploit vulnerabilities in your media player.
Because this specific filename appears in various online repositories and user-generated playlists, there isn't a single "official paper" written about it. However, if you are looking for technical documentation or research related to how these files work and the systems that use them, you should look into these areas: 1. Technical Standards for M3U