The square root problem of Kato in one dimension, and first order elliptic systems
P. AuscherA. McIntoshA. Nahmod
47F0535J1547A6047B2547E05two-point boundary conditionsfirst order systemsKato square roots
Indiana University Mathematics Journal
1997
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10.1512/iumj.1997.46.1423
10.1512/iumj.1997.46.1423
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Indiana Univ. Math. J. 46 (1997) 659 - 696
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