To cite package ‘zephyr’ in publications use:

  Thomsen A, Jeppesen M, Girard C, Troejelsgaard K, Gakava L, Larsen S,
  Obucina V (2025). _zephyr: Structured Messages and Options_. R
  package version 0.1.2, ,
  <https://github.com/novonordisk-opensource/zephyr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {zephyr: Structured Messages and Options},
    author = {Aksel Thomsen and Mathias Lerbech Jeppesen and Cervan Girard and Kristian Troejelsgaard and Lovemore Gakava and Steffen Falgreen Larsen and Vladimir Obucina},
    year = {2025},
    note = {R package version 0.1.2, 
},
    url = {https://github.com/novonordisk-opensource/zephyr},
  }