Abdel Hamid, Ossama, Behshad Behzadi, Stefan Christoph, and Monika H Henzinger. “Detecting the Origin of Text Segments Efficiently.”https://doi.org/10.1145/1526709.1526719__In 18th International World Wide Web Conference, 61–70. Association for Computing Machinery, 2009.https://doi.org/10.1145/1526709.1526719 .