@techreport{weko_39128_1, author = "山川,修三 and 成瀬,正 and 末永,康仁", title = "NTT通研におけるCGの研究", year = "1987", institution = "NTT電気通信研究所, NTT電気通信研究所, NTT電気通信研究所", number = "46(1987-CG-027)", month = "jul" }