To cite dotCall64 in publications use:

Florian Gerber, Kaspar Moesinger, Reinhard Furrer (2018). “dotCall64: An R package providing an efficient interface to compiled C, C++, and Fortran code supporting long vectors.” SoftwareX, 7, 217–221. ISSN 2352-7110, doi:10.1016/j.softx.2018.06.002.

Florian Gerber, Kaspar Moesinger, Reinhard Furrer (2017). “Extending R packages to support 64-bit compiled code: An illustration with spam64 and GIMMS NDVI3g data.” Computer & Geoscience, 104, 109–119. ISSN 0098-3004, doi:10.1016/j.cageo.2016.11.015.

Corresponding BibTeX entries:

  @Article{,
    title = {{dotCall64}: An {R} package providing an efficient
      interface to compiled {C}, {C++}, and {Fortran} code supporting
      long vectors},
    author = {{Florian Gerber} and {Kaspar Moesinger} and {Reinhard
      Furrer}},
    journal = {SoftwareX},
    year = {2018},
    volume = {7},
    pages = {217--221},
    issn = {2352-7110},
    doi = {10.1016/j.softx.2018.06.002},
  }

  @Article{,
    title = {Extending {R} packages to support 64-bit compiled code: An
      illustration with spam64 and {GIMMS} {NDVI3g} data},
    author = {{Florian Gerber} and {Kaspar Moesinger} and {Reinhard
      Furrer}},
    journal = {Computer & Geoscience},
    year = {2017},
    volume = {104},
    pages = {109--119},
    issn = {0098-3004},
    doi = {10.1016/j.cageo.2016.11.015},
  }