1. Agresti, A. (2002). Categorical data analysis. New York: Wiley-Interscience.
2. Amati, G. (2006). Frequentist and Bayesian approach to information retrieval. In Advances in information retrieval, lecture notes in computer science (Vol. 3936, pp. 13–24). Berlin: Springer.
3. Amati, G. (2009). Divergence from randomness models (pp. 929–932). Boston, MA: Springer.
4. Amati, G., Carpineto, C., & Romano, G. (2004). Query difficulty, robustness, and selective application of query expansion. In Advances in information retrieval, lecture notes in computer science (Vol. 2997, pp. 127–137). Berlin: Springer.
5. Amati, G., & Van Rijsbergen, C. J. (2002). Probabilistic models of information retrieval based on measuring the divergence from randomness. ACM Transactions on Information Systems, 20(4), 357–389.