On the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>B</mml:mi> <mml:mi>M</mml:mi> <mml:mi>O</mml:mi> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>C</mml:mi> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mn>1</mml:mn> <mml:mo>,</mml:mo> <mml:mi>γ<!-- γ --></mml:mi> </mml:mrow> </mml:msup> </mml:math>-regularity for a weak solution of fully nonlinear elliptic systems in dimension three and four
Electronic journal of qualitative theory of differential equations