1. Agda wiki page. http://wiki.portal.chalmers.se/agda/
2. Formalisation of Mathematics. http://wiki.portal.chalmers.se/cse/pmwiki.php/ForMath/ForMath
3. GEM-E3 Website. http://www.gem-e3.net/
4. ReMIND-R. http://www.pik-potsdam.de/research/sustainable-solutions/models/remind
5. Bellman, R.E.: Dynamic Programming. Princeton University Press, Princeton (1957)