http://www.sec.gov/Archives/edgar/data/862406/000095010317012205/dp83900_424b5.htm
http://www.sec.gov/Archives/edgar/data/1651561/000104746917007500/a2233996z424b5.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117045208/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1003410/000119312517362634/d507079d424b5.htm
http://www.sec.gov/Archives/edgar/data/1530743/000119312517362867/d415290d424b5.htm
http://www.sec.gov/Archives/edgar/data/1053507/000119312517362875/d474814d424b2.htm
http://www.sec.gov/Archives/edgar/data/1101239/000119312517362917/d496661d424b2.htm