For a deep dive into the legal history, you can review the YIFY Wikipedia entry .
: Standardized release formats (720p, 1080p, and 3D). 10 YIFY
Since you asked for a "paper" regarding (also known as YTS ), The Rise and Fall of YIFY Torrent Solutions For a deep dive into the legal history,
In October 2015, the original YIFY/YTS was permanently shut down following a multi-million dollar lawsuit filed by the Motion Picture Association of America (MPAA). While many "clone" or "imposter" sites (such as yts.mx or yts.ag ) emerged later using the same name and interface, they are not operated by the original team. 10 YIFY