田園都市線および大井町線の朝ラッシュ時の混雑緩和施策を実施 [Measures implemented to alleviate morning rush-hour overcrowding on Denentoshi and Oimachi Lines] (PDF). News release (in Japanese). Japan: Tokyu Corporation. 22 March 2017. p. 2. Archived(PDF) from the original on 23 March 2017. Retrieved 23 March 2017.
田園都市線および大井町線の朝ラッシュ時の混雑緩和施策を実施 [Measures implemented to alleviate morning rush-hour overcrowding on Denentoshi and Oimachi Lines] (PDF). News release (in Japanese). Japan: Tokyu Corporation. 22 March 2017. p. 2. Archived(PDF) from the original on 23 March 2017. Retrieved 23 March 2017.