811系リニューアル第1号編成が出場 [First refurbished 811 series set outshopped]. RM News (in Japanese). Japan: Neko Publishing Co., Ltd. 4 April 2017. Archived from the original on 4 April 2017. Retrieved 4 April 2017.
railf.jp
811系リニューアル車,4月27日から営業運転を開始 [Refurbished 811 series train to enter revenue service from 27 April]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 26 April 2017. Archived from the original on 26 April 2017. Retrieved 26 April 2017.
web.archive.org
811系リニューアル第1号編成が出場 [First refurbished 811 series set outshopped]. RM News (in Japanese). Japan: Neko Publishing Co., Ltd. 4 April 2017. Archived from the original on 4 April 2017. Retrieved 4 April 2017.
811系リニューアル車,4月27日から営業運転を開始 [Refurbished 811 series train to enter revenue service from 27 April]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 26 April 2017. Archived from the original on 26 April 2017. Retrieved 26 April 2017.