To cite homals in publications use:
Jan de Leeuw, Patrick Mair (2009). Gifi Methods for Optimal Scaling in R: The Package homals. Journal of Statistical Software, 31(4), 1-20. URL http://www.jstatsoft.org/v31/i04/.
Corresponding BibTeX entry:
@Article{, title = {Gifi Methods for Optimal Scaling in {R}: The Package {homals}}, author = {Jan {de Leeuw} and Patrick Mair}, journal = {Journal of Statistical Software}, year = {2009}, volume = {31}, number = {4}, pages = {1--20}, url = {http://www.jstatsoft.org/v31/i04/}, }