Schemapath, a minimal extension to xml schema for conditional constraints.

@inproceedings{coen-2004-schemapath, author = {Claudio Sacerdoti Coen and Paolo Marinelli and Fabio Vitali}, editor = {Stuart I. Feldman and Mike Uretsky and Marc Najork and Craig E. Wills}, title = {{Schemapath, a minimal extension to xml schema for conditional constraints}}, booktitle = {{Proceedings of the 13th international conference on World Wide Web, WWW 2004, New York, NY, USA, May 17-20, 2004}}, pages = {164--174}, publisher = {ACM}, year = {2004}, url = {https://doi.org/10.1145/988672.988695}, doi = {https://doi.org/10.1145/988672.988695} }