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http://en.wikipedia.org/wiki/Relativistic_mechanics
http://www.britannica.com/EBchecked/topic/496896/relativistic-mechanics
http://www.worldscientific.com/worldscibooks/10.1142/7095
http://www.sjsu.edu/faculty/watkins/relamech.htm
http://arxiv.org/ftp/arxiv/papers/0806/0806.0171.pdf
http://dictionary.reference.com/browse/relativistic+mechanics
http://physics.gmu.edu/~joe/PHYS428/Topic4.pdf
http://www.physics.gla.ac.uk/~dmiller/lectures/RQM_2008.pdf
http://www.ks.uiuc.edu/Services/Class/PHYS480/qm_PDF/chp10.pdf
http://theory.gsi.de/~friman/rel-quant-mech-rev-07.pdf
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