KnRuSo1987
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C. Kenig, A. Ruiz, C. Sogge, Uniform Sobolev inequalities and unique continuation theorems for second order constant coefficient differential operators, Duke Math. J. 55 (1987), 329-347.
C. Kenig, A. Ruiz, C. Sogge, Uniform Sobolev inequalities and unique continuation theorems for second order constant coefficient differential operators, Duke Math. J. 55 (1987), 329-347.