To cite the paper that the R stodom package is based on:

Schaub S, El Benni N (forthcoming). “How do price (risk) changes influence farmers’ preference to reduce fertilizer application?” xxx.

Corresponding BibTeX entry:

  @Article{,
    title = {How do price (risk) changes influence farmers’ preference
      to reduce fertilizer application?},
    author = {Sergei Schaub and Nadja {El Benni}},
    year = {forthcoming},
    journal = {xxx},
  }