ΧΡΗΣΙΜΕΣ ΔΙΕΥΘΥΝΣΕΙΣ
http://www.th.physik.uni-frankfurt.de/~jr/portraits.html
http://www.nbi.dk/~petersen/Physics/PhotoGallery/photogallery.html
http://www.physics2005.org/einstein.html
http://www.maths.tcd.ie/pub/HistMath/People/RBallHist.html
http://www.westegg.com/einstein/
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Einstein.html