To cite support.CEs in publications use:

Aizaki H (2012). “Basic Functions for Supporting an Implementation of Choice Experiments in R.” Journal of Statistical Software, 50(C2), 1–24. doi:10.18637/jss.v050.c02.

Corresponding BibTeX entry:

  @Article{,
    title = {Basic Functions for Supporting an Implementation of Choice
      Experiments in {R}},
    author = {Hideo Aizaki},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {50},
    number = {C2},
    pages = {1--24},
    doi = {10.18637/jss.v050.c02},
  }