Does mass really depend on velocity, dad?, Carl G. Adler, Am. J. Phys. 55(8), August 1987
Relativistic mass is discussed in both a pedagogical and and historical context. It is pointed out that its introduction into the special theory of relativity was much in the way in of a historical accident. Gaining widespread use initially in instruction, the use of relativistic mass is showing signs of progressive disfavor. An analysis and criticism of the various ways relativistic mass is used in relativity is detailed and special attention is given in the frequent misuse of relativistic mass as an inertia.