MrTwTs1997
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K. Moriyama, S. Tonegawa, Y. Tsutsumi. Almost global existence of solutions for the quadratic semilinear Klein-Gordon equation in one space dimension. Funkcial. Ekvac, 40 (1997), 313-333. MathSciNet, arXiv.
K. Moriyama, S. Tonegawa, Y. Tsutsumi. Almost global existence of solutions for the quadratic semilinear Klein-Gordon equation in one space dimension. Funkcial. Ekvac, 40 (1997), 313-333. MathSciNet, arXiv.