http://www.sec.gov/Archives/edgar/data/1642775/000104746915006582/a2225562z424b3.htm
http://www.sec.gov/Archives/edgar/data/917520/000119312515278355/d33674d424b2.htm
http://www.sec.gov/Archives/edgar/data/1469367/000119312515278786/d880891d424b4.htm