In 1966, the United Nations General Assembly established the United Nations Commission on International Trade Law (UNCITRAL). As of 2002, it contained 60 member states.  Its goal is to promote a standardized set of regulations that govern international trade.

The UNCITRAL Arbitration Rules were originally adopted on April 28, 1976 with a revised set released in 2010.  As a whole, these Rules contain articles covering all aspects of an arbitration process including appointment of arbitrators and challenges thereto, form, effect and interpretation of an award, pleas as to the jurisdiction of the arbitral tribunal and various other aspects of an arbitration proceeding that may arise."

With respect to the UNCITRAL Rules as revised in 2010, the link is http://www.uncitral.org/pdf/english/texts/arbitration/arb-rules-revised/arb-rules-revised-2010-e.pdf.  The original rules adopted on December 15, 1976 can be found at http://www.uncitral.org/pdf/english/texts/arbitration/arb-rules/arb-rules.pdf.