しなの鉄道（株）、えちごトキめき鉄道（株）、あいの風とやま鉄道（株）及びＩＲいしかわ鉄道（株）申請の第一種鉄道事業許可について [Details of railway business approval for Shinano Railway, Echigo Tokimeki Railway Company, Ainokaze Toyama Railway, and IR Ishikawa Railway]. News release (in Japanese). Japan: Ministry of Land, Infrastructure, Transport and Tourism. 26 February 2014. Retrieved 5 September 2015.
