To cite msSurv in publications use:

Nicole Ferguson, Somnath Datta, Guy Brock (2012). msSurv: An R Package for Nonparametric Estimation of Multistate Models. Journal of Statistical Software, 50(14), 1-24. URL http://www.jstatsoft.org/v50/i14/.

Corresponding BibTeX entry:

  @Article{,
    title = {{msSurv}: An {R} Package for Nonparametric Estimation of
      Multistate Models},
    author = {Nicole Ferguson and Somnath Datta and Guy Brock},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {50},
    number = {14},
    pages = {1--24},
    url = {http://www.jstatsoft.org/v50/i14/},
  }