http://www.sec.gov/Archives/edgar/data/1167831/000095010316011813/dp64178_424b3-apsa.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116057443/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116057445/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116057500/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1243429/000119312516500933/d157121d424b2.htm
http://www.sec.gov/Archives/edgar/data/62996/000119312516501342/d158219d424b5.htm
http://www.sec.gov/Archives/edgar/data/1114446/000119312516501625/d153792d424b2.htm
http://www.sec.gov/Archives/edgar/data/1668186/000119312516501693/d246503d424b5.htm
http://www.sec.gov/Archives/edgar/data/1561551/000161577416004464/s102792_424b3.htm