✓

@Book{            book:2249795,
  Author        = {Gerhard J{\"a}ger, Wilfried Sieg},
  date-added    = "2020-04-10 11:07:26 +0200",
  date-modified = "2020-04-10 11:07:26 +0200",
  Edition       = "1st ed.",
  ISBN          = "978-3-319-63332-9,978-3-319-63334-3",
  Publisher     = "Springer International Publishing",
  Series        = "Outstanding Contributions to Logic 13",
  Title         = "Feferman on Foundations",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=81656d93093c736daf2c121ded8c57e4",
  Year          = "2017",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=81656d93093c736daf2c121ded8c57e4",
  File          = "Feferman on Foundations by Gerhard Jäger, Wilfried Sieg (z-lib.org) - a - a - a.pdf"
}

@Book{ book:2249795, Author = {Gerhard J{\"a}ger, Wilfried Sieg}, date-added = "2020-04-10 11:07:26 +0200", date-modified = "2020-04-10 11:07:26 +0200", Edition = "1st ed.", ISBN = "978-3-319-63332-9,978-3-319-63334-3", Publisher = "Springer International Publishing", Series = "Outstanding Contributions to Logic 13", Title = "Feferman on Foundations", URL = "http://gen.lib.rus.ec/book/index.php?md5=81656d93093c736daf2c121ded8c57e4", Year = "2017", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=81656d93093c736daf2c121ded8c57e4", File = "Feferman on Foundations by Gerhard Jäger, Wilfried Sieg (z-lib.org) - a - a - a.pdf" }