Elsevier, Advances in Mathematics, 3(229), p. 1912-1923, 2012
DOI: 10.1016/j.aim.2011.12.012
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We prove the existence of maximizers of Sobolev-Strichartz estimates for a general class of propagators, involving relevant examples, as for instance the wave, Dirac and the hyperbolic Schrbdinger flows. (C) 2011 Elsevier Inc. All rights reserved.