http://www.sec.gov/Archives/edgar/data/70502/000007050216000484/pps402.htm
http://www.sec.gov/Archives/edgar/data/70502/000007050216000485/fps401.htm
http://www.sec.gov/Archives/edgar/data/109177/000010917716000101/a424b3012716exchangeeffect.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116048774/form424b5.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116048814/form424b5.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116048850/form424b5.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116048851/form424b2.htm
http://www.sec.gov/Archives/edgar/data/276328/000119312516439615/d126355d424b2.htm
http://www.sec.gov/Archives/edgar/data/831001/000119312516440004/d33811d424b2.htm