1. Aboulnaga A, Alameldeen AR, Naughton J. Estimating the selectivity of XML path expressions for internet scale applications. In: Proceedings of 27th international conference on very large databases. 2001. p. 591–600.
2. Chen Z, Jagadish HV, Korn F, Koudas N, Muthukrishnan S, Ng RT, Srivastava D. Counting twig matches in a tree. In: Proceedings of 17th international conference on data engineering. 2001. p. 453–62.
3. Freire J, Haritsa J, Ramanath M, Roy P, Siméon J. StatiX: making XML count. In: Proceedings of ACM SIGMOD international conference on management of data. 2002. p. 181–91.
4. Goldman R, Widom J. Dataguides: enabling query formulation and optimization in semistructured databases. In: Proceedings of 23th international conference on very large databases. 1997. p. 436–45.
5. Lim L, Wang M, Padmanabhan S, Vitter J, Parr R. XPathLearner: an on-line self-tuning markov histogram for XML path selectivity estimation. In: Proceedings of 28th international conference on very large databases. 2002. p. 442–53.