To cite CADFtest in publications use:

Lupi C (2009). “Unit Root CADF Testing with R.” Journal of Statistical Software, 32(2), 20.

Corresponding BibTeX entry:

  @Article{,
    title = {Unit Root CADF Testing with {R}},
    author = {Claudio Lupi},
    journal = {Journal of Statistical Software},
    year = {2009},
    volume = {32},
    pages = {20},
    number = {2},
  }