Fair and equitable treatment/Minimum standard of treatment, including denial of justice claims
Arbitrary, unreasonable and/or discriminatory measures
http://books.google.ch/books?id=iVMyAQAAQBAJ&pg=PA28&dq=gas+natural+argentina+icsid&hl=en&sa=X&ei=qfZuVK35Mcz3O5fqgagI&ved=0CDUQ6AEwAQ#v=onepage&q=gas%20natural%20argentina%20icsid&f=false
https://www.iareporter.com/articles/latin-america-round-up-an-update-on-new-disputes-and-developments-in-bolivia-peru-venezuela-and-argentina/ (requires subscription)
https://www.argentina.gob.ar/noticias/finalizo-el-proceso-arbitral-que-camuzzi-internacional-mantenia-contra-la-argentina