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\contentsline {figure}{\numberline {2.1}{\ignorespaces Scaled roots of $K_{\ell +1/2}(z)$.}}{6}
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\contentsline {figure}{\numberline {3.1}{\ignorespaces Radial axis with support of $\Psi _\ell (0,r)$ and point at $r_B-\epsilon \delta $ (the dashed line). }}{8}
\contentsline {figure}{\numberline {3.2}{\ignorespaces Retarded time axis and support of profile function $f$. }}{8}
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\contentsline {figure}{\numberline {A.1}{\ignorespaces Keyhole contour with arcs $\Gamma : |z|= R$ and $\gamma : |z|=\delta $}}{34}