https://gcaptain.com/china-europe-rail-lines-supply-china/?subscriber=true&goal=0_f50174ef03-401209d0eb-170450703&mc_cid=401209d0eb&mc_eid=4069c37bba
https://read.oecd-ilibrary.org/view/?ref=130_130609-v8jn83j1j3&title=Trade-facilitation-and-the-covid-19-pandemic
https://www.brookings.edu/wp-content/uploads/2018/12/181224_Dollar_Sense_Solis.pdf