To cite casnet in publications use:

Hasselman F (2018). invctr: Infix Functions For Vector Operations. R package version 0.1.0, https://github.com/FredHasselman/invctr.

Corresponding BibTeX entry:

  @Manual{invctr-package,
    title = {invctr: Infix Functions For Vector Operations},
    author = {Fred Hasselman},
    year = {2018},
    note = {R package version 0.1.0},
    url = {https://github.com/FredHasselman/invctr},
  }