@unpublished{HagelbergHofreiterKeyser2015,
  author    = {Hagelberg, Erika and Hofreiter, Michael and Keyser, Christine},
  title     = {Ancient DNA: the first three decades},
  series = {Philosophical transactions of the Royal Society of London : B, Biological sciences},
  volume    = {370},
  journal   = {Philosophical transactions of the Royal Society of London : B, Biological sciences},
  number    = {1660},
  publisher = {Royal Society},
  address   = {London},
  issn      = {0962-8436},
  doi       = {10.1098/rstb.2013.0371},
  pages     = {6},
  year      = {2015},
  language  = {en}
}