To cite NMOF in publications please use:

  Manfred Gilli, Dietmar Maringer and Enrico Schumann. Numerical
  Methods and Optimization in Finance. 2nd edition. Elsevier/Academic
  Press, 2019.

A BibTeX entry for LaTeX users is

  @Book{,
    title = {Numerical Methods and Optimization in Finance},
    author = {Manfred Gilli and Dietmar Maringer and Enrico Schumann},
    year = {2019},
    publisher = {Elsevier/Academic Press},
    address = {Waltham, MA, USA},
    url = {https://www.enricoschumann.net/NMOF/},
    note = {ISBN 978-0128150658},
    edition = {Second},
  }

  Enrico Schumann. Numerical Methods and Optimization in Finance
  (NMOF). Manual. Package version 2.10-0.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Numerical Methods and Optimization in Finance (NMOF) Manual. Package version 2.10-0)},
    author = {Enrico Schumann},
    year = {2011--2024},
    url = {https://enricoschumann.net/NMOF/},
  }