http://www.sec.gov/Archives/edgar/data/1561660/000095010317007864/dp79421_424b5.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117032187/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117032240/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117032283/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117032290/form424b2.htm
http://www.sec.gov/Archives/edgar/data/320193/000119312517258040/d433785d424b2.htm
http://www.sec.gov/Archives/edgar/data/1423689/000142368917000033/prospectussupplement.htm