To cite package ‘nixmass’ in publications use:

  Schellander H (2025). _nixmass: Snow Water Equivalent Modeling with
  the 'Delta.snow' and 'HS2SWE' Models and Empirical Regression
  Models_. R package version 1.3.1,
  <https://github.com/haraldschellander/nixmass>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {nixmass: Snow Water Equivalent Modeling with the 'Delta.snow' and
'HS2SWE' Models and Empirical Regression Models},
    author = {Harald Schellander},
    year = {2025},
    note = {R package version 1.3.1},
    url = {https://github.com/haraldschellander/nixmass},
  }