↑ Fearon, Joseph G. (1978). Application of Sulzer 12ASV 25/30 Diesel Engines to M-K TE70-4S Locomotives. Energy Technology Conference & Exhibition, Houston, Texas, November 5–9, 1978. American Society of Mechanical Engineers. pp.10–11. 78-DGP-15.
↑ "地下鉄(高速電車)の概要"[Overview of the subway (high-speed train)]. city.sapporo.jp (in Japanese). Archived from the original on 19 January 2024. Retrieved 6 February 2024.
↑ Feurer, Keith (Summer 2004). "Look who came out on top". North Western Lines. 32 (1). Chicago and North Western Railway Historical Society: 16–39. ISSN0279-5000.
↑ "東京都交通局,交通局について,都営地下鉄"[History of the Transportation Bureau]. kotsu.metro.tokyo.jp (in Japanese). Archived from the original on 23 February 2024. Retrieved 12 July 2024.
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