1. Ahonen, H.: Disambiguation of SGML content models. In: International Workshop on Principles of Document Processing, pp. 27–37 (1996)
2. Bárcenas, E., Genevès, P., Layaïda, N., Schmitt, A.: Query reasoning on trees with types, interleaving, and counting. In: Proceedings of the 22nd International Joint Conference on Artificial Intelligence, pp. 718–723 (2011)
3. Bex, G.J., Gelade, W., Martens, W., Neven, F.: Simplifying XML schema: effortless handling of nondeterministic regular expressions. In: Proceedings of the ACM SIGMOD International Conference on Management of Data, pp. 731–744 (2009)
4. Bex, G.J., Neven, F., Schwentick, T., Vansummeren, S.: Inference of concise regular expressions and DTDs. ACM Trans. Database Syst. 35(2), 1–47 (2010)
5. Bray, T., Paoli, J., Sperberg-McQueen, C.M., Maler, E., Yergeau, F.: Extensible markup language (XML) 1.0, 5th edn. W3C Recommendation (2008).
http://www.w3.org/TR/REC-xml/