Indirect expropriation
http://www.americamovil.com/sites/default/files/57a0c4210280d_2016-03-11T12%3A00%3A00.pdf
http://otp.investis.com/clients/us/america_movil/SEC/sec-show.aspx?Type=html&FilingId=11613635&CIK=0001129137&Index=10000
http://www.iareporter.com/articles/telecoms-investor-initiates-arbitration-against-colombia-while-gas-natural-triggers-pre-arbitration-waiting-period/ (requires subscription)
http://globalarbitrationreview.com/article/1067699/colombia-faces-claim-from-mexican-telecoms-giant (requires subscription)
https://globalarbitrationreview.com/article/1146940/colombia-gets-paid-but-telecoms-fight-continues (requires subscription)
https://www.iareporter.com/arbitration-cases/america-movil-v-colombia/ (requires subscription)