A CLASS OF NONLINEAR BOUNDARY VALUE PROBLEMS FOR THE SECOND—ORDER E2 CLASS ELLIPTIC SYSTEMS IN GENER

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A class of nonlinear boundary value problems(BVP) for the second-order E2 class elliptic systems itt general form is discussed. By introducing a kind of transformation, this kind of BVP is reduced to a class of generalized nonlinear Riemann-Hilbert BVP. A
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