Path constraints on semistructured and structured data

Peter Buneman, Wenfei Fan, Scott Weinstein
1998 Proceedings of the seventeenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems - PODS '98  
doi:10.1145/275487.275502 dblp:conf/pods/BunemanFW98 fatcat:5vvrmha335ecjkvrokov2os2ee