Siwy (author), “Contract Claims and Treaty Claims”, in ICSID Convention after 50 years, Crina Baltag (ed.), Kluwer Law International 2017 1 January 2017 Alfred Siwy Siwy (author), “Contract Claims and Treaty Claims”, in ICSID Convention after 50 years, Crina Baltag (ed.), Kluwer Law International 2017 Share this article