@techreport{weko_32477_1, author = "味園,真司 and 岩野,和生", title = "サーキットボード穴開け問題", year = "1993", institution = "日本IBM東京基礎研究所, 日本IBM東京基礎研究所", number = "48(1993-AL-033)", month = "may" }