B. Elayeb, I. Bounhas, O. Khiroun, und N. Saoud. ICAART (Revised Selected Papers), Volume 8946 von Lecture Notes in Computer Science, Seite 280-295. Springer, (2014)
B. Aklouche, I. Bounhas, und Y. Slimani. TREC, Volume 500-331 von NIST Special Publication, National Institute of Standards and Technology (NIST), (2018)