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Heat capacity of a self-gravitating radiation sphere Diego PavónPeter T. Landsberg Research Articles Pages: 457 - 461
An improved algorithm for quartic equation classification and Petrov classification F. W. LetniowskiR. G. McLenaghan Research Articles Pages: 463 - 483
General covariant energy-momentum conservation law in general spacetime Duan Yi-ShiLiu Ji-ChengDong Xue-Geng Research Articles Pages: 485 - 496