ref.bib

@online{dominik2003-org,
  author = {Carsten Dominik and \href{http://orgmode.org/org.html#History-and-Acknowledgments}{many others}},
  title = {Org mode for {E}macs},
  year = 2003,
  url = {http://orgmode.org/},
  urldate = {2015-05-01},
  timestamp = {20181209T0933}
}

@online{gruber2004-markdown,
  author = {John Gruber},
  title = {Markdown},
  year = 2004,
  url = {http://daringfireball.net/projects/markdown/},
  month = dec,
  urldate = {2015-05-01},
  timestamp = {20181209T0933}
}