To cite CollocInfer in publications use:

Giles Hooker, James O. Ramsay, Luo Xiao (2016). CollocInfer: Collocation Inference in Differential Equation Models. Journal of Statistical Software, 75(2), 1-52.<doi:10.18637/jss.v075.i02>

Corresponding BibTeX entry:

  @Article{,
    title = {{CollocInfer}: Collocation Inference in Differential
      Equation Models},
    author = {Giles Hooker and James O. Ramsay and Luo Xiao},
    journal = {Journal of Statistical Software},
    year = {2016},
    volume = {75},
    number = {2},
    pages = {1--52},
    doi = {10.18637/jss.v075.i02},
  }