Examines the well-posedness of boundary value problems of Dirichlet and Neumann type for elliptic systems on the upper half-space with coefficients independent of the transversal variable and with boundary data in fractional Hardy-Sobolev and Besov spaces.
The authors use the so-called first order approach which uses minimal assumptions on the coefficients.
American Mathematical Society Elliptic boundary value problems with fractional regularity data. the first order approach, hardback/pascal auscher
