To cite package 'mixlow' in publications use:

John C. Boik (2012). mixlow: software for assessing drug synergism/antagonism. R package version 1.0.1.

Corresponding BibTeX entry:

  @Manual{,
    title = {mixlow: software for assessing drug synergism/antagonism},
    author = {John C. Boik},
    year = {2012},
    note = {R package version 1.0.1},
  }