@Book{sitereport_132920,
 author = "永井, 秀夫 and 榎森, 進 and 平井, 聖 and 近藤, 公夫 and 足達, 富士夫",
 title = "特別史跡五稜郭跡保存整備調査報告書",
 volume = "",
 publisher = "函館市教育委員会",
 year = 1990,
 series = "",
 number = "",
 url = https://sitereports.nabunken.go.jp/132920,
 }