@book{
  author = "Benninga, Simon, Sarig, Oded H.",
  title = "Corporate finance : a valuation approach",
  year: c1997
  key = "Corporations--Valuation",
  key = "Corporations--Finance",
  publisher = "McGraw-Hill",
  address = "New York",
  edition = "International ed",
  series = "McGraw-Hill series in finance ;",
  ISSN/ISBN = "9780071140720 [0071140727]",
}