http://www.sec.gov/Archives/edgar/data/1688852/000104746917004187/a2232512z424b1.htm
http://www.sec.gov/Archives/edgar/data/1702780/000104746917004208/a2232514z424b4.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117025958/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1708978/000119312517211901/d394266d424b5.htm