+.. Libros:
+.. ~~~~~~~
+
+.. [BKIP08] Kris Macleod Bell, Lars Ivar Igesund, Sean Kelly, and Michael
+ Parker. Learn to Tango with D. Apress, 2007. ISBN 1-59059-960-8.
+
+.. [JOLI96] Richard Jones, Rafael D Lins. Garbage Collection: Algorithms
+ for Automatic Dynamic Memory Management. John Wiley & Sons, 1996.
+ ISBN 0-471-94148-4.
+
+.. [SUTT99] Herb Sutter. Exceptional C++: 47 Engineering Puzzles,
+ Programming Problems, and Solutions, 1ra edición. Addison-Wesley
+ Professional, 1999. ISBN 0-201-61562-2.
+
+
+.. Webs:
+.. ~~~~~
+
+.. [NAS00] Neil Schemenauer. `Garbage Collection for Python`__. 2000.
+__ http://arctrix.com/nas/python/gc/
+
+.. [PHP081] PHP Team. `PHP 5.3 alpha1 released!`__. PHP news archive.
+ 2008-08-01.
+__ http://www.php.net/archive/2008.php#id2008-08-01-1
+
+.. [GCBIB] Richard Jones. `The Garbage Collection Bibliography`__. 1996-2009.
+__ http://www.cs.ukc.ac.uk/people/staff/rej/gcbib/gcbib.html
+
+.. [MOLAWE] Paolo Molaro. `Compacting GC`__. The Mono Project. Obtenido en
+ Junio de 2009.
+__ http://www.mono-project.com/Compacting_GC
+
+.. [MOLA06] Paolo Molaro. `A new Mono GC`__. Octubre 2006.
+__ http://www.go-mono.com/meeting06/mono-sgen.pdf
+
+.. [BOEHWD] Hans-J. Boehm. `Conservative GC Algorithmic Overview`__. HP
+ Labs / SGI. Obtenido en Junio de 2009.
+__ http://www.hpl.hp.com/personal/Hans_Boehm/gc/gcdescr.html
+
+