A sufficient condition for the local solvability of a linear partial differential operator with double characteristics
1978 ◽
Vol 29
(3)
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pp. 374-387
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2010 ◽
Vol 4
(2-3)
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pp. 223-230
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2004 ◽
Vol 357
(4)
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pp. 1303-1324
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1984 ◽
Vol 3
(5)
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pp. 425-433
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1977 ◽
Vol 29
(1)
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pp. 1-27
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1980 ◽
Vol 20
(1)
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pp. 125-140
1991 ◽
Vol 16
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pp. 183-198
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