1. O’Neil, P.E., O’Neil, E.J., Pal. S., Cseri, I., Schaller, G., Westbury, N.: ORDPATHs: insert-friendly XML node labels. In: Proceedings of the ACM SIGMOD, pp. 903–908 (2004)
2. Li, C., Ling, T.W.: QED: a novel quaternary en-coding to completely avoid re-labeling in XML updates. In: Proceedings of CIKM 2005, pp. 501–508 (2005)
3. Goldman, R., Widom, J.: Dataguides: enabling query formulation and optimization in semistrucutured databases. In: Proceedings of VLDB, pp. 436–445 (1997)
4. Kanbara, T., Ueshima, S.: Distance range queries in spatial index tree. Trans. Inf. Process. Soc. Jpn.: Database 5(1), 1–17 (2012)
5. Kido, K., Amagasa, T., Kitagawa, H.: A scheme for parallel processing of XML data using PC clusters. In: Proceedings of Database Engineering Workshop, 6B-oi3 (2006)