To cite 'PHENIX' in publications use:

Torices R, Muñoz-Pajares AJ (2015). “PHENIX: An R package to estimate a size-controlled phenotypic integration index.” Applications in plant sciences, 3.

Corresponding BibTeX entry:

  @Article{,
    title = {PHENIX: An R package to estimate a size-controlled
      phenotypic integration index},
    author = {R. Torices and A. J. Muñoz-Pajares},
    journal = {Applications in plant sciences},
    volume = {3},
    year = {2015},
  }