Philip Gibbs, Jim Carr & Don Koks (2008). "What is relativistic mass?". Usenet Physics FAQ. Retrieved 2008-09-19. Note that in 2008 the last editor, Don Koks, rewrote a significant portion of the page, changing it from a view extremely dismissive of the usefulness of relativistic mass to one which hardly questions it. The previous version was: Philip Gibbs & Jim Carr (1998). "Does mass change with speed?". Usenet Physics FAQ. Archived from the original on 2007-06-30.
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Philip Gibbs, Jim Carr & Don Koks (2008). "What is relativistic mass?". Usenet Physics FAQ. Retrieved 2008-09-19. Note that in 2008 the last editor, Don Koks, rewrote a significant portion of the page, changing it from a view extremely dismissive of the usefulness of relativistic mass to one which hardly questions it. The previous version was: Philip Gibbs & Jim Carr (1998). "Does mass change with speed?". Usenet Physics FAQ. Archived from the original on 2007-06-30.