http://books.google.ch/books?id=o84usZR5P6IC&pg=PA187&lpg=PA187&dq=Booker+PLC+v.+Guyana+%28ICSID+Case+No.+ARB/01/9%29&source=bl&ots=Ldib6GVuCK&sig=t7VJQMpqjcJshtagAnYbG4RPe8w&hl=en&sa=X&ei=ApxgVN_TKsnYaufogKAC&ved=0CB0Q6AEwAA#v=onepage&q=Booker%20PLC%20v.%20Guyana%20%28ICSID%20Case%20No.%20ARB%2F01%2F9%29&f=false
http://books.google.ch/books?id=o84usZR5P6IC&pg=PA187&lpg=PA187&dq=Booker+PLC+v.+Guyana+%28ICSID+Case+No.+ARB/01/9%29&source=bl&ots=Ldib6GVuCK&sig=t7VJQMpqjcJshtagAnYbG4RPe8w&hl=en&sa=X&ei=ApxgVN_TKsnYaufogKAC&ved=0CB0Q6AEwAA#v=onepage&q=Booker%20PLC%20v.%20Guyana%20%28ICSID%20Case%20No.%20ARB%2F01%2F9%29&f=false