To cite dmdScheme in publications use:

Krug RM, Petchey OL (2019). dmdScheme: An R package for working with Domain specific MetaData Schemes. doi: 10.5281/zenodo.3581970, https://doi.org/10.5281/zenodo.3581970.

Corresponding BibTeX entry:

  @Manual{,
    title = {{dmdScheme}: An R package for working with Domain specific
      MetaData Schemes},
    author = {Rainer M. Krug and Owen L. Petchey},
    journal = {Zenodo},
    year = {2019},
    version = {v0.9.22},
    doi = {10.5281/zenodo.3581970},
    url = {https://doi.org/10.5281/zenodo.3581970},
  }