@Manual{R,
    title = {R: A Language and Environment for Statistical Computing},
    author = {{R Core Team}},
    organization = {R Foundation for Statistical Computing},
    address = {Vienna, Austria},
    year = {2018},
    url = {https://www.R-project.org/},
  }

@article{RJ-2015-012,
  author = {Paul Murrell},
  title = {{The gridGraphics Package}},
  year = {2015},
  journal = {{The R Journal}},
  url = {https://journal.r-project.org/archive/2015/RJ-2015-012/index.html},
  pages = {151--162},
  volume = {7},
  number = {1}
}
@book{R:Murrell:2011,
  title = {R Graphics, Second Edition},
  author = {Murrell, Paul},
  isbn = {978-1-4398-3176-2},
  series = {Chapman \& Hall/CRC the R series},
  url = {http://www.crcpress.com/product/isbn/9781439831762},
  year = 2011,
  publisher = {Chapman \& Hall/CRC Press},
  address = {Boca Raton, FL},
}
@misc{inkscape,
author={{The Inkscape Team}},
year={2018},
title={Inkscape},
url={http://www.inkscape.org/}
}
@manual{tantau:2015,
   author    = {Till Tantau},
   title     = {The TikZ and PGF Packages},
   url       = {https://sourceforge.net/projects/pgf/},
year = {2015}
}
@manual{pgfplots,
author={C. Feuers\:anger},
title={Manual for Package pgfplots},
url={http://pgfplots.sourceforge.net/pgfplots_layers.pdf},
year={2012}
}
@article{2011-d3,
  title = {D3: Data-Driven Documents},
  author = {Michael Bostock AND Vadim Ogievetsky AND Jeffrey Heer},
  journal = {IEEE Trans. Visualization \& Comp. Graphics (Proc. InfoVis)},
  year = {2011},
  url = {http://vis.stanford.edu/papers/d3}
}
@misc{c3js,
author={Masayuki Tanaka},
title={c3: A {D3}-based reusable chart library},
year={2018},
url={https://github.com/c3js/c3}
}