To cite package ‘covafillr’ in publications use:

Albertsen CM (2019). covafillr: Local Polynomial Regression of State Dependent Covariates in State-Space Models. R package version 0.4.4, https://github.com/calbertsen/covafillr.

Corresponding BibTeX entry:

  @Manual{,
    title = {covafillr: Local Polynomial Regression of State Dependent
      Covariates in State-Space Models},
    author = {Christoffer Moesgaard Albertsen},
    year = {2019},
    note = {R package version 0.4.4},
    url = {https://github.com/calbertsen/covafillr},
  }