http://www.sec.gov/Archives/edgar/data/85961/000008596117000079/a424b3prelimpricsuppno4.htm
http://www.sec.gov/Archives/edgar/data/85961/000008596117000082/a424b3finalpricsuppno4.htm
http://www.sec.gov/Archives/edgar/data/891478/000095010317007455/dp78933_424b5.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117029562/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117029566/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036117029609/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1302343/000114420417039423/v471791_424b5.htm
http://www.sec.gov/Archives/edgar/data/879101/000139843217000097/a14023.htm