G. Valiente. String Processing and Information Retrieval, 2001. SPIRE 2001. Proceedings.Eighth International Symposium on, page 212-219. (November 2001)
I. Baxter, A. Yahin, L. Moura, M. Sant'Anna, and L. Bier. Proceedings of the International Conference on Software Maintenance, page 368--. Washington, DC, USA, IEEE Computer Society, (1998)