To cite the baseline package in publications use:

Liland KH, Almøy T, Mevik B (2010). “Optimal Choice of Baseline Correction for Multivariate Calibration of Spectra.” Applied Spectroscopy, 64, 1007-1016.

Corresponding BibTeX entry:

  @Article{,
    title = {Optimal Choice of Baseline Correction for Multivariate
      Calibration of Spectra},
    author = {Kristian Hovde Liland and Trygve Almøy and Bjørn-Helge
      Mevik},
    year = {2010},
    volume = {64},
    pages = {1007-1016},
    journal = {Applied Spectroscopy},
  }