KeSmhSo2000
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M. Keel, H. Smith, C. Sogge, On global existence for nonlinear wave equations outside convex obstacles, Am. J. Math 122 (2000), 805\u2013842.
M. Keel, H. Smith, C. Sogge, On global existence for nonlinear wave equations outside convex obstacles, Am. J. Math 122 (2000), 805\u2013842.