Burroughs, David (10 July 2020). "Athens metro Line 3 extension opens". International Railway Journal. Omaha: Simmons-Boardman Publishing. Archived from the original on 18 October 2022. Retrieved 18 October 2022.
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Burroughs, David (10 July 2020). "Athens metro Line 3 extension opens". International Railway Journal. Omaha: Simmons-Boardman Publishing. Archived from the original on 18 October 2022. Retrieved 18 October 2022.