To cite package ‘lotri’ in publications use:

  Fidler M (2024). _lotri: A Simple Way to Specify Symmetric, Block
  Diagonal Matrices_. R package version 1.0.0.9000, ,
  <https://github.com/nlmixr2/lotri>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {lotri: A Simple Way to Specify Symmetric, Block Diagonal Matrices},
    author = {Matthew L. Fidler},
    year = {2024},
    note = {R package version 1.0.0.9000, },
    url = {https://github.com/nlmixr2/lotri},
  }