@misc{short_author,
  date = {1974-01-02},
  month = mar,
  publisher = {Springer Science and Business Media {LLC}},
  volume = {248},
  number = {5443},
  pages = {30--31},
  author = {DEF},
  title = {first original entry},
  journaltitle = {Nature}
}

@misc{short_author,
  date = {1974-01-02},
  month = mar,
  publisher = {Springer Science and Business Media {LLC}},
  volume = {248},
  number = {5443},
  pages = {30--31},
  author = {DEF},
  title = {duplicated citation key},
  journaltitle = {Nature}
}

@misc{,
  date = {1974-01-02},
  month = mar,
  publisher = {Springer Science and Business Media {LLC}},
  volume = {248},
  number = {5443},
  pages = {30--31},
  author = {DEF},
  title = {no key supplied 1},
  journaltitle = {Absurdly long Journal Title for the most fancy scientific field.}
}

@misc{,
  date = {1974-01-02},
  month = mar,
  publisher = {Springer Science and Business Media {LLC}},
  volume = {248},
  number = {5443},
  pages = {30--31},
  author = {DEF},
  title = {no key supplied 2},
  journaltitle = {ABC}
}

@misc{,
  date = {1974-01-02},
  month = mar,
  publisher = {Springer Science and Business Media {LLC}},
  volume = {248},
  number = {5443},
  pages = {30--31},
  author = {DEF},
  title = {no key supplied 3},
  journaltitle = {ABC}
}
