@Book{sitereport_60701,
 author = "大塚, 昌彦 and 綿貫, 綾子",
 title = "空沢遺跡",
 volume = "1987 O地点",
 publisher = "渋川市教育委員会",
 year = 1987,
 series = "渋川市発掘調査報告書",
 number = "15",
 url = https://sitereports.nabunken.go.jp/60701,
 }