 \langle \; {\mbox{\boldmath $x$}},{\mbox{\boldmath $X$}}\mid({\mbox{\boldmath $e$}}_{0}^{\scriptscriptstyle (j)}\cdot{\hat{{\mbox{\boldmath $v$}}}})\mid\Phi_{kn}^{\scriptscriptstyle (j,\infty)} \; \rangle \langle \; \Phi_{k'n'}^{\scriptscriptstyle (j,\infty)}\mid{\mbox{\boldmath $x$}},{\mbox{\boldmath $X$}}\; \rangle\right