http://www.youtube.com/watch?v=lyZQPjUT5B4 http://www.youtube.com/watch?v=_h3aMVBe8k8 http://www.youtube.com/watch?v=IkByxya0qxc http://www.youtube.com/watch?v=YKlDz1J3TSw http://www.youtube.com/watch?v=ty-fpXXydm8 http://www.youtube.com/user/AlgoRythmics http://www.youtube.com/watch?v=lUqFelc84XE http://www.youtube.com/watch?v=MtcrEhrt_K0 http://www.youtube.com/watch?v=MU8tn11Nv5s http://www.youtube.com/watch?v=UnK5ueUgc88 αλλά και άλλες παρουσιάσεις: http://www.youtube.com/watch?v=_r0gV2hQYf0 http://www.youtube.com/watch?v=t8g-iYGHpEA http://www.youtube.com/watch?v=F-7kk4lY_mQ http://www.youtube.com/channel/HCzMRkM_BeQd8
