5. http://blogs.perl.org/users/ovid/2010/08/what-to-know-before-debating-type-systems.html 6. http://www.lispcast.com/static-vs-dynamic-typing 7. http://gigasquidsoftware.com/blog/2014/02/01/hitchhikers-guide-to-clojure/ 8. http://christophermaier.name/blog/2011/07/07/writing-elegant-clojure-code-using-higher-order- functions 9. http://blakesmith.me/2012/05/25/understanding-clojure-concurrency-part-2.html 10. http://www.cs.yale.edu/quotes.html 11. http://en.wikipedia.org/wiki/Piet_Mondrian 12. http://clojure.org/rationale