Korth et al., Database System Concepts, 1986, pp. 466-468. |
Pixel, No. 18, "New Approach to Regional Plans and Facility Management-Map Information Processing WING", Kasahaya and Tsuruya. |
38th Meeting of National Conference of Information Acadamy, Paper 4R-7, "Realization of Rough Sketch Generating Function in Map Information System", Niwa et al. |
Computer Science Investigation Report, No. 6, "Semantic Summarizing Function in Map Database", Kyushu University Large-Size Computer Center. |
3rd Meeting of National Conference of Information Academy, "Figure Managing System by Optimal Cell Method", Shimada and Kurata. |