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@Book{            book:2814919,
  Author        = "Stillwell, John",
  date-added    = "2021-04-30 19:59:58 +0200",
  date-modified = "2021-04-30 19:59:58 +0200",
  ISBN          = "9783030551926,303055192X",
  Publisher     = "Springer",
  Title         = "Mathematics and Its History: A Concise Edition",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=3B827DECE9F383DEA064EBAC11195841",
  Year          = "2020",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=3B827DECE9F383DEA064EBAC11195841"
}

@Book{ book:2814919, Author = "Stillwell, John", date-added = "2021-04-30 19:59:58 +0200", date-modified = "2021-04-30 19:59:58 +0200", ISBN = "9783030551926,303055192X", Publisher = "Springer", Title = "Mathematics and Its History: A Concise Edition", URL = "http://gen.lib.rus.ec/book/index.php?md5=3B827DECE9F383DEA064EBAC11195841", Year = "2020", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=3B827DECE9F383DEA064EBAC11195841" }