To cite aws in publications use:

  Polzehl J, Papafitsoros K, Tabelow K (2020). “Patch-Wise Adaptive
  Weights Smoothing in R.” _Journal of Statistical Software_, *95*(6),
  1-27. doi:10.18637/jss.v095.i06
  <https://doi.org/10.18637/jss.v095.i06>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Patch-Wise Adaptive Weights Smoothing in {R}},
    author = {J\"org Polzehl and Kostas Papafitsoros and Karsten Tabelow},
    journal = {Journal of Statistical Software},
    year = {2020},
    volume = {95},
    number = {6},
    pages = {1--27},
    doi = {10.18637/jss.v095.i06},
  }

Polzehl J, Tabelow K (2019). _Magnetic Resonance Brain Imaging:
Modeling and Data Analysis Using R._, series UseR! Springer.
doi:10.1007/978-3-030-29184-6
<https://doi.org/10.1007/978-3-030-29184-6>.

A BibTeX entry for LaTeX users is

  @Book{,
    title = {Magnetic Resonance Brain Imaging: Modeling and Data Analysis Using R.},
    publisher = {Springer},
    year = {2019},
    author = {J\"org Polzehl and Karsten Tabelow},
    series = {UseR!},
    doi = {10.1007/978-3-030-29184-6},
  }