National Transportation Safety Board. 2010-01-21 [2010-01-23]. (原始内容存档于2010-02-10). Clerici, Kevin. Officials push plan to avoid rail collisions. Ventura County
The launch of LTC's smart card technology is underway. London Transit Commission. [10 February 2016]. (原始内容存档于2016-02-12). La carte Opus à Lévis dès avril