http://www.sec.gov/Archives/edgar/data/1000275/000114036117038112/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117038154/form424b2.htm
http://www.sec.gov/Archives/edgar/data/879635/000119312517307582/d437972d424b4.htm
http://www.sec.gov/Archives/edgar/data/1572910/000157104917008210/t1702755-424b5.htm