http://www.sec.gov/Archives/edgar/data/1506307/000104746915008111/a2226374z424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036115038799/form424b2.htm
http://www.sec.gov/Archives/edgar/data/12927/000119312515356438/d20639d424b2.htm
http://www.sec.gov/Archives/edgar/data/80424/000119312515356452/d64723d424b5.htm