http://www.sec.gov/Archives/edgar/data/55785/000104746917005506/a2233154z424b5.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117034063/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117034102/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1101239/000119312517275639/d448603d424b5.htm