Sb-p4
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S. Selberg. On an estimate for the wave equation and applications to nonlinear problems (English summary). Differential Integral Equations, 15 (2002), 213--236. MathSciNet, arXiv.
S. Selberg. On an estimate for the wave equation and applications to nonlinear problems (English summary). Differential Integral Equations, 15 (2002), 213--236. MathSciNet, arXiv.