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@Manual{bookdown,
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@article{variational,
author = {M. Pilz and K. Kunzmann and C. Herrmann and G. Rauch and M. Kieser},
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@Manual{pass2019,
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@Manual{minitab2020,
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@Manual{addplan2020,
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@Manual{ghactions,
  title =	 {{GitHub Actions}},
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@Manual{cran,
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@Manual{AGSDest,
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    url = {https://CRAN.R-project.org/package=AGSDest}
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   year   = {2020},
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@Manual{covr,
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  }
