Monotonicity Methods for a Class of First Order Semilinear Elliptic Differential Equation Systems in the Plane
1981 ◽
Vol 100
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pp. 187-212
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1998 ◽
Vol 147
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pp. 79-122
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2003 ◽
Vol 2003
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pp. 4217-4227
2020 ◽
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2007 ◽
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