\documentclass[]{jsbook}
\usepackage{psfrag,graphicx,color,defvar2,eclepsf,othermac}
\pagestyle{empty}
\begin{document}
%\includegraphics[width=0.95\figbasewidth,clip]{eps-fl/Image28.eps}
\centering
\footnotesize 
\psfrag{-Pe(k)}[r][r]{$-\Pe(k)$}
\psfrag{Za(k)}[][]{$Z_a(k)$}
\psfrag{Zs(k)}[][]{$Z_s(k)$}
\psfrag{Zp(k)}[][]{$Z_p(k)$}
\psfrag{Ud(k)}[l][l]{$U_d(k)$}
\psfrag{Udmax}[][]{{\scriptsize $U_{dmax}$}}
\psfrag{-Udmax}[l][l]{{\scriptsize $-U_{dmax}$}}
\psfrag{R1}[][]{$R_1$}
\psfrag{R2}[][]{$R_2$}
\psfrag{R3}[][]{$R_3$}
\psfrag{I}[][]{$I$}
\includegraphics[width=0.99\figbasewidth,clip]{eps1/damping-loop-3D.eps}
\end{document}
