http://en.wikipedia.org/wiki/History_of_special_relativity [2]
http://press.princeton.edu/titles/8251.html [3]
http://www.pitt.edu/~jdnorton/teaching/HPS_0410/chapters_2015_Jan_1/orig... [4]
http://csep10.phys.utk.edu/astr161/lect/history/einstein.html [5]
http://www.hawking.org.uk/the-origin-of-the-universe.html [6]
http://ag-physics.org/relat/ [7]
Links
[1] https://hootsgo.org/?q=node/6415
[2] http://en.wikipedia.org/wiki/History_of_special_relativity
[3] http://press.princeton.edu/titles/8251.html
[4] http://www.pitt.edu/~jdnorton/teaching/HPS_0410/chapters_2015_Jan_1/origins/index.html
[5] http://csep10.phys.utk.edu/astr161/lect/history/einstein.html
[6] http://www.hawking.org.uk/the-origin-of-the-universe.html
[7] http://ag-physics.org/relat/