1. The EUR-Lex repository, June 2010. URL http://www.ke.tu-darmstadt.de/resources/eurlex/eurlex.html .
2. Allwein, E. L., Schapire, R. E., & Singer, Y. (2001). Reducing multiclass to binary: a unifying approach for margin classifiers. Journal of Machine Learning Research, 1, 113–141.
3. Blei, D., & McAuliffe, J. (2008). Supervised topic models. In J. C. Platt, D. Koller, Y. Singer, & S. Roweis (Eds.), Advances in neural information processing systems 20 (pp. 121–128). Cambridge: MIT Press.
4. Blei, D. M., & Lafferty, J. D. (2005). Correlated topic models. In Advances in neural information processing systems.
5. Blei, D. M., Ng, A. Y., & Jordan, M. I. (2003). Latent Dirichlet Allocation. Journal of Machine Learning Research, 3, 993–1022.