@Article{         singmaster:1971,
  Author        = "Singmaster, David",
  copyright     = "Copyright {\copyright} 1971 Mathematical Association of America",
  date-added    = "2013-12-10 12:30:25 +0000",
  date-modified = "2013-12-10 12:30:25 +0000",
  ISSN          = "00029890",
  Journal       = "The American Mathematical Monthly",
  jstor_formatteddate="Apr., 1971",
  Language      = "English",
  Number        = "4",
  Pages         = "pp. 385-386",
  Publisher     = "Mathematical Association of America",
  Title         = "How Often Does an Integer Occur as a Binomial Coefficient?",
  URL           = "http://www.jstor.org/stable/2316907",
  Volume        = "78",
  Year          = "1971",
  bdsk-url-1    = "http://www.jstor.org/stable/2316907",
  File          = "How Often Does an Integer Occur as a Binomial Coefficient? - Singmaster (0) (0) - a - a - y.pdf"
}

@Article{ singmaster:1971, Author = "Singmaster, David", copyright = "Copyright {\copyright} 1971 Mathematical Association of America", date-added = "2013-12-10 12:30:25 +0000", date-modified = "2013-12-10 12:30:25 +0000", ISSN = "00029890", Journal = "The American Mathematical Monthly", jstor_formatteddate="Apr., 1971", Language = "English", Number = "4", Pages = "pp. 385-386", Publisher = "Mathematical Association of America", Title = "How Often Does an Integer Occur as a Binomial Coefficient?", URL = "http://www.jstor.org/stable/2316907", Volume = "78", Year = "1971", bdsk-url-1 = "http://www.jstor.org/stable/2316907", File = "How Often Does an Integer Occur as a Binomial Coefficient? - Singmaster (0) (0) - a - a - y.pdf" }