AgYok1998
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R. Agemi, K. Yokoyama. The null condition and global existence of solutions to systems of wave equations with different speeds. Adv. Nonlinear PDE and Stochastics, ' (1998), 43-86. MathSciNet, arXiv.
R. Agemi, K. Yokoyama. The null condition and global existence of solutions to systems of wave equations with different speeds. Adv. Nonlinear PDE and Stochastics, ' (1998), 43-86. MathSciNet, arXiv.