How to cite the R package optimx

optimx is a popular R package that is available at https://cran.r-project.org/web/packages/optimx/index.html. By citing R packages in your paper you lay the grounds for others to be able to reproduce your analysis and secondly you are acknowledging the time and work people have spent creating the package.

APA citation

Formatted according to the APA Publication Manual 7^th edition. Simply copy it to the References page as is.

APA

The minimal requirement is to cite the R package in text along with the version number. Additionally, you can include the reference list entry the authors of the optimx package have suggested.

Example of an in-text citation

Analysis of the data was done using the optimx package (v2020-4.2; Nash & Varadhan, 2011).

Reference list entry

Nash, J. C., & Varadhan, R. (2011). Unifying Optimization Algorithms to Aid Software System Users: optimx for R. In Journal of Statistical Software (Vol. 43, Issue 9, pp. 1–14). http://www.jstatsoft.org/v43/i09/

Vancouver citation

Formatted according to Vancouver style. Simply copy it to the references section as is.

Vancouver

Example of an in-text citation

Analysis of the data was done using the optimx package v2020-4.2 (1).

Reference list entry

1.
Nash JC, Varadhan R. Unifying Optimization Algorithms to Aid Software System Users: optimx for R [Internet]. Vol. 43, Journal of Statistical Software. 2011. p. 1–14. Available from: http://www.jstatsoft.org/v43/i09/

BibTeX

Reference entry in BibTeX format. Simply copy it to your favorite citation manager.

BibTeX

@MISC{Nash2011-vc,
  title   = "Unifying Optimization Algorithms to Aid Software System Users:
             {optimx} for {R}",
  author  = "Nash, John C and Varadhan, Ravi",
  journal = "Journal of Statistical Software",
  volume  =  43,
  number  =  9,
  pages   = "1--14",
  year    =  2011,
  url     = "http://www.jstatsoft.org/v43/i09/"
}

RIS

Reference entry in RIS format. Simply copy it to your favorite citation manager.

RIS

TY  - MISC
AU  - Nash, John C
AU  - Varadhan, Ravi
TI  - Unifying Optimization Algorithms to Aid Software System Users: optimx for
      R
T2  - Journal of Statistical Software
VL  - 43
IS  - 9
SP  - 1-14
PY  - 2011
DA  - 2011
UR  - http://www.jstatsoft.org/v43/i09/
ER  -

Other citation styles (ACS, ACM, IEEE, ...)

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optimx R package release history

Version	Release date
2020-2.2	2020-02-07
2020-1.31	2020-02-01
2018-7.10	2018-09-30
2013.8.7	2014-11-13
2013.8.6	2014-05-05
2014.5.4	2014-05-05
2012.04.01	2012-04-22
2012-3.31	2012-03-31
2011-8.2	2012-02-20
2011-8.1	2011-08-21
2011-2.29	2011-07-29
2011-2.27	2011-03-01
0.88	2010-10-23
0.84	2010-08-02