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diff --git a/doc/Eqs/fld.tex b/doc/Eqs/fld.tex
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+\documentstyle[12pt]{article}
+
+\begin{document}
+
+$$
+F^{H} = -R_{FU}(U-U^{\infty}) + R_{FE}E^{\infty}
+$$
+
+\end{document}
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+\documentstyle[12pt]{article}
+
+\begin{document}
+
+$$
+-R_{FU}(U-U^{\infty}) = -R_{FE}E^{\infty} - F^{rest}
+$$
+
+\end{document}