To cite IsoSpecR in publications use:

Mateusz K. Łącki, Dirk Valkenborg, Michał Startek (2020). “IsoSpec2: Ultrafast Fine Structure Calculator.” Analytical Chemistry, 92(14), 9472-9475. doi:10.1021/acs.analchem.0c00959, Mateusz K. Łącki, Dirk Valkenborg, Michał Startek (2020). IsoSpec2: Ultrafast Fine Structure Calculator Analytical Chemistry, Published online ahead of print URL https://doi.org/10.1021/acs.analchem.0c00959, https://doi.org/10.1021/acs.analchem.0c00959.

Mateusz K. Łącki, Michał Startek, Dirk Valkenborg, Anna Gambin (2017). “IsoSpec: Hyperfast Fine Structure Calculator.” Analytical Chemistry, 89(6), 3272-3277. Mateusz K. Łącki, Michał Startek, Dirk Valkenborg, Anna Gambin (2017). IsoSpec: Hyperfast Fine Structure Calculator. Analytical Chemistry 89(6), 3272-3277. URL https://doi.org/10.1021/acs.analchem.6b01459, https://doi.org/10.1021/acs.analchem.6b01459.

Corresponding BibTeX entries:

  @Article{,
    title = {{IsoSpec2}: Ultrafast Fine Structure Calculator},
    author = {{Mateusz K. Łącki} and {Dirk Valkenborg} and {Michał
      Startek}},
    year = {2020},
    journal = {Analytical Chemistry},
    volume = {92},
    number = {14},
    pages = {9472-9475},
    doi = {10.1021/acs.analchem.0c00959},
    url = {https://doi.org/10.1021/acs.analchem.0c00959},
    note = {Mateusz K. Łącki, Dirk Valkenborg, Michał Startek (2020).
      IsoSpec2: Ultrafast Fine Structure Calculator Analytical
      Chemistry, Published online ahead of print URL
      https://doi.org/10.1021/acs.analchem.0c00959},
  }

  @Article{,
    title = {{IsoSpec}: Hyperfast Fine Structure Calculator},
    author = {{Mateusz K. Łącki} and {Michał Startek} and {Dirk
      Valkenborg} and {Anna Gambin}},
    journal = {Analytical Chemistry},
    year = {2017},
    volume = {89},
    number = {6},
    pages = {3272-3277},
    url = {https://doi.org/10.1021/acs.analchem.6b01459},
    note = {Mateusz K. Łącki, Michał Startek, Dirk Valkenborg, Anna
      Gambin (2017). IsoSpec: Hyperfast Fine Structure Calculator.
      Analytical Chemistry 89(6), 3272-3277. URL
      https://doi.org/10.1021/acs.analchem.6b01459},
  }