Frank Neven, Jan Van den Bussche, Dirk Van Gucht, Gottfried Vossen. Typed Query Languages for Databases Containing Queries. In Proceedings of the Seventeenth ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, June 1-3, 1998, Seattle, Washington. pages 189-196, ACM Press, 1998. [doi]
Abstract is missing.