Πηγές-Μέσα

https://el.wikipedia.org/wiki/%CE%86%CE%BD%CE%BF%CE%B9%CE%BE%CE%B7

http://el.wikipedia.org/wiki/%CE%A3%CE%AC%CE%BD%CF%84%CF%81%CE%BF_%CE%9C%CF%80%CE%BF%CF%84%CE%B9%CF%84%CF%83%CE%AD%CE%BB%CE%B9

http://images.google.gr/images?hl=el&source=hp&q=%CF%80%CF%81%CF%89%CF%84%CE%BF%CE%BC%CE%B1%CE%B3%CE%B9%CE%B1&gbv=2&aq=f&oq

http://www.matia.gr/7/74/74_1_2.html