To cite package ‘lsei’ in publications use:

Wang Y, Lawson C, Hanson R (2026). lsei: Solving Least Squares or Quadratic Programming Problems under Equality/Inequality Constraints. R package version 1.3-1, https://CRAN.R-project.org/package=lsei.

Corresponding BibTeX entry:

  @Manual{,
    title = {lsei: Solving Least Squares or Quadratic Programming
      Problems under Equality/Inequality Constraints},
    author = {Yong Wang and Charles L. Lawson and Richard J. Hanson},
    year = {2026},
    note = {R package version 1.3-1},
    url = {https://CRAN.R-project.org/package=lsei},
  }