"首都高速会社/3号池尻~三軒茶屋間大規模更新/東急電鉄と施工委託協定へ" [Shuto Expressway / Large-scale renewal on Route 3 between Ikejiri and Sangenjaya / Construction contract agreement with Tokyu Corporation]. Nikkan Kensetsu Kogyo Shinbun (in Japanese). 13 February 2017. Retrieved 19 August 2020.