Please cite the rmac package by the following reference:

Fay, M.P. (2005). Random marginal agreement coefficients: rethinking the adjustment for chance in agreement coeffients Biostatistics 6(1), 171--180.

Corresponding BibTeX entry:

  @Article{,
    title = {Random marginal agreement coefficients: rethinking the
      adjustment for chance in agreement coeffients},
    author = {Michael P. Fay},
    journal = {Biostatistics},
    year = {2005},
    volume = {6},
    number = {1},
    pages = {171--180},
  }