"北海道新幹線 最長トンネルさらに長く 工事計画変更" [Construction plan changed on the Hokkaido Shinkansen's longest tunnel] (in Japanese). 28 July 2016. Archived from the original on 28 July 2016. Retrieved 12 April 2020.
"二十三番 安養寺夢宅寺(浅虫)" [23 Anyoji Temple Asamushi] (in Japanese). 27 February 2008. Archived from the original on 19 May 2018. Retrieved 12 April 2020.
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"北海道新幹線 最長トンネルさらに長く 工事計画変更" [Construction plan changed on the Hokkaido Shinkansen's longest tunnel] (in Japanese). 28 July 2016. Archived from the original on 28 July 2016. Retrieved 12 April 2020.
"二十三番 安養寺夢宅寺(浅虫)" [23 Anyoji Temple Asamushi] (in Japanese). 27 February 2008. Archived from the original on 19 May 2018. Retrieved 12 April 2020.