To cite piqp in publications use:

  Schwan R, Jiang Y, Kuhn D, Jones C (2023). “PIQP: A Proximal
  Interior-Point Quadratic Programming Solver.”
  doi:10.48550/arXiv.2304.00290
  <https://doi.org/10.48550/arXiv.2304.00290>.

A BibTeX entry for LaTeX users is

  @Misc{,
    title = {PIQP: A Proximal Interior-Point Quadratic Programming Solver},
    author = {Roland Schwan and Yuning Jiang and Daniel Kuhn and Colin N. Jones},
    year = {2023},
    doi = {10.48550/arXiv.2304.00290},
  }

If you also use the R package, in addition use:

  Narasimhan B, Schwan R, Jiang Y, Kuhn D, Jones C (2023). “piqp: R
  Interface to Proximal Interior Point Quadratic Programming Solver.”

A BibTeX entry for LaTeX users is

  @Misc{,
    title = {piqp: R Interface to Proximal Interior Point Quadratic Programming Solver},
    author = {Balasubramanian Narasimhan and Roland Schwan and Yuning Jiang and Daniel Kuhn and Colin N. Jones},
    year = {2023},
  }
