Tokyo Metro 9000 series (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Tokyo Metro 9000 series" in English language version.

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railf.jp

東京メトロ9000系5次車が営業運転を開始 [Tokyo Metro 9000 series 5th batch trains enter service]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 24 May 2009. Archived from the original on 13 April 2016. Retrieved 30 March 2016.
"東京メトロ9000系増結用中間車が甲種輸送される" [Intermediate cars for Tokyo Metro 9000 series expansion delivered]. Japan Railfan Magazine Online (in Japanese). 10 October 2021. Retrieved 6 December 2022.

Nishinaka, Yuki (13 December 2023). 東京メトロの「同形式なのに別物」な中間車ふたたび！　9000系8連化用増結車が公開 [Tokyo Metro's "same type but different" intermediate cars are back! 9000 series 8-car expansion set unveiled]. Tetsudo.com (in Japanese). Asahi Interactive. Archived from the original on 14 December 2023. Retrieved 14 December 2023.

平成21年春東京メトロ南北線に新造車両導入 [New trains entering service on Tokyo Metro Namboku Line in spring 2009]. News release (in Japanese). Japan: Tokyo Metro. 28 January 2009. Archived from the original on 11 April 2016. Retrieved 30 March 2016.
南北線9000系車両をリニューアルします [Namboku Line 9000 series to be refurbished] (PDF). News release (in Japanese). Japan: Tokyo Metro. 29 March 2016. Archived (PDF) from the original on 10 April 2016. Retrieved 30 March 2016.
"東京メトロプラン2021" [Tokyo Metro Plan 2021] (PDF) (Press release) (in Japanese). Tokyo Metro. Archived from the original (PDF) on 27 March 2019. Retrieved 24 December 2021.

東京メトロ9000系5次車が営業運転を開始 [Tokyo Metro 9000 series 5th batch trains enter service]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 24 May 2009. Archived from the original on 13 April 2016. Retrieved 30 March 2016.
平成21年春東京メトロ南北線に新造車両導入 [New trains entering service on Tokyo Metro Namboku Line in spring 2009]. News release (in Japanese). Japan: Tokyo Metro. 28 January 2009. Archived from the original on 11 April 2016. Retrieved 30 March 2016.
南北線9000系車両をリニューアルします [Namboku Line 9000 series to be refurbished] (PDF). News release (in Japanese). Japan: Tokyo Metro. 29 March 2016. Archived (PDF) from the original on 10 April 2016. Retrieved 30 March 2016.
"東京メトロプラン2021" [Tokyo Metro Plan 2021] (PDF) (Press release) (in Japanese). Tokyo Metro. Archived from the original (PDF) on 27 March 2019. Retrieved 24 December 2021.
Nishinaka, Yuki (13 December 2023). 東京メトロの「同形式なのに別物」な中間車ふたたび！　9000系8連化用増結車が公開 [Tokyo Metro's "same type but different" intermediate cars are back! 9000 series 8-car expansion set unveiled]. Tetsudo.com (in Japanese). Asahi Interactive. Archived from the original on 14 December 2023. Retrieved 14 December 2023.