http://www.sec.gov/Archives/edgar/data/895728/000110465918022611/a18-8730_2424b5.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036118017388/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1686529/000119312518107888/d562778d424b2.htm
http://www.sec.gov/Archives/edgar/data/1002761/000119312518108176/d563343d424b5.htm
http://www.sec.gov/Archives/edgar/data/1402436/000119312518108774/d553724d424b2.htm