Paolo Ferragina, Nick Koudas, S. Muthukrishnan, Divesh Srivastava. Two-dimensional Substring Indexing. In Proceedings of the Twentieth ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, May 21-23, 2001, Santa Barbara, California, USA. ACM, 2001. [doi]
Abstract is missing.