1. Rigid overhead conductor rail system (ROCS) for narrow tunnels, high reliability and for special applications. https://www.furrerfrey.ch/en/systems/conductor_rail.html. Accessed 25 June 2023
2. Du, Z.: Current collection quality of pantograph coupling for 160 km/h rigid catenary system on beijing daxing international airport express. Urban Mass Transit 22(12), 157–160 (2019). (in Chinese)
3. He, G.: Research progress and prospect of 160 km/h overhead rigid catenary. Constr. Design Eng. 19, 131–134 (2022). (in Chinese)
4. Li, F.: Study on wave motion of catenary and ways to increase the ratio of wave speed. Southwest Jiaotong University (2012) (in Chinese)
5. Liu, Z., Han, Z., Hou, Y., Liu, Y.: Modified formula of wave motion velocity of catenary inclusive of air damping. J. China Railway Soc. 35(01), 41–45 (2013). (in Chinese)