Forest

References

[Knuth 1996] Donald E. Knuth. The TeXbook. Addison-Wesley. 1996.

[Tantau 2007] Till Tantau. TikZ & PGF, Manual for Version 2.10. 2007.
http://sourceforge.net/projects/pgf

[Tantau 2013] Till Tantau. TikZ & PGF, Manual for Version 3.0.0. 2013.
http://sourceforge.net/projects/pgf