http://en.wikipedia.org/wiki/General_relativity [2]
http://en.wikipedia.org/wiki/Introduction_to_general_relativity [3]
http://www.physics.fsu.edu/courses/spring98/ast3033/relativity/generalre... [4]
http://csep10.phys.utk.edu/astr162/lect/cosmology/gravity.html [5]
http://www-history.mcs.st-and.ac.uk/HistTopics/General_relativity.html [6]
http://www.physics.uoguelph.ca/poisson/research/agr.pdf [7]
http://preposterousuniverse.com/grnotes/grtinypdf.pdf [8]
http://star-www.st-and.ac.uk/~hz4/gr/hendry_GRwaves.pdf [9]
Links
[1] https://hootsgo.org/?q=node/6419
[2] http://en.wikipedia.org/wiki/General_relativity
[3] http://en.wikipedia.org/wiki/Introduction_to_general_relativity
[4] http://www.physics.fsu.edu/courses/spring98/ast3033/relativity/generalrelativity.htm
[5] http://csep10.phys.utk.edu/astr162/lect/cosmology/gravity.html
[6] http://www-history.mcs.st-and.ac.uk/HistTopics/General_relativity.html
[7] http://www.physics.uoguelph.ca/poisson/research/agr.pdf
[8] http://preposterousuniverse.com/grnotes/grtinypdf.pdf
[9] http://star-www.st-and.ac.uk/~hz4/gr/hendry_GRwaves.pdf