1. Christensen, J. M. (2015). Towards large scale summarization (Doctoral dissertation).
2. http://programminghistorian.org/lessons/topic-modeling-and-mallet .
3. Blei, D. M. (2012). Probabilistic topic models. Communications of the ACM, 55(4), 77–84.
4. MALLET Homepage. (2017). Mallet.cs.umass.edu. Retrieved December 7, 2017, from http://mallet.cs.umass.edu/ .
5. Uta priss HomePage. (2017). Retrieved December 7, 2017, from http://www.upriss.org .