@Book{sitereport_59839,
 author = "須藤, 隆司 and 三石, 宗一",
 title = "芝宮遺跡群南上中原・南下中原　長土呂遺跡群上聖端",
 volume = "",
 publisher = "佐久市教育委員会",
 year = 1989,
 series = "佐久埋蔵文化財調査センター調査報告書",
 number = "20",
 url = https://sitereports.nabunken.go.jp/59839,
 }