Estimates for the asymptotic behavior of solutions of the Helmholtz equation, with an application to second order elliptic differential operators with variable coefficients
1973 ◽
Vol 13
(1)
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pp. 57-80
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2002 ◽
Vol 32
(1)
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pp. 51-78
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1963 ◽
Vol 14
(1)
◽
pp. 12-12
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1991 ◽
Vol 42
(6)
◽
pp. 848-863
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1993 ◽
Vol 47
(2)
◽
pp. 141-149
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