http://www.sec.gov/Archives/edgar/data/70502/000007050216000450/pps399.htm
http://www.sec.gov/Archives/edgar/data/70502/000007050216000451/fps398.htm
http://www.sec.gov/Archives/edgar/data/1280600/000104746916009539/a2227021z424b5.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116046227/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116046243/form424b2.htm
http://www.sec.gov/Archives/edgar/data/40729/000114420416073742/v428226_424b2.htm
http://www.sec.gov/Archives/edgar/data/1517022/000119312516420117/d71116d424b5.htm