1. Roddick, J.F., Hornsby, K., deVries, D.: A unifying semantic distance model for determining the similarity of attribute values. In: Oudshoorn, M. (ed.) 26th Australasian Computer Science Conf (ACSC 2003), Adelaide, Australia, ACS. CRPIT, vol. 16, pp. 111–118 (2003)
2. Lecture Notes in Computer Science;S. Rice,2000
3. Allen, J.: Maintaining knowledge about temporal intervals. CACM 26, 832–843 (1983)
4. Lecture Notes in Computer Science;Z. Kedad,1999
5. Snodgrass, R. (ed.): The TSQL2 Temporal Query Language. Kluwer Academic Publishing, New York (1995)