\textheight = 250 true mm
\textwidth  = 166 true mm
\hoffset    = -4.7 true mm
\voffset    = -31 true mm

\evensidemargin = 0 cm
\oddsidemargin  = 0 cm

\def\affiln#1{$\mbox{}^{(#1)}$}
\def\thetitle{\ }
\def\theauthors{\ }
\def\theaffils{\ }

\def\title#1{
\def\thetitle{#1}
}
\def\author#1{
\def\theauthors{#1}
}
\def\affil#1{
\def\theaffils{#1}
}

\renewcommand{\maketitle}{
\begin{center}
{\LARGE\sf \thetitle}
\vskip 0.5 cm
{\large\sf \theauthors}
\vskip 0.35 cm
\begin{minipage}{135mm}
{\footnotesize\sf \theaffils}
\end{minipage}
\vskip 0.5 cm
\end{center}
\noindent
}

\renewenvironment{abstract}{\centerline{\large\textsf{\textbf{Abstract}}}
\vskip 0.2cm
\begin{center}
\begin{minipage}{135mm}
\small\bfseries\sffamily}{\end{minipage}\end{center}\vskip 0.25cm}

\def\section{\@startsection {section}{1}{\z@}{-3.5ex plus -1ex minus
-.2ex}{2.3ex plus .2ex}{\large\bfseries\sffamily}}
\def\subsection{\@startsection{subsection}{2}{\z@}{-3.25ex plus -1ex minus
-.2ex}{1.5ex plus .2ex}{\large\sffamily}}
\def\subsubsection{\@startsection{subsubsection}{3}{\z@}{-3.25ex plus
-1ex minus -.2ex}{1.5ex plus .2ex}{\normalsize\sffamily}}
\def\paragraph{\@startsection
{paragraph}{4}{\z@}{3.25ex plus 1ex minus .2ex}{-1em}{\normalsize\bf}}
\def\subparagraph{\@startsection
{subparagraph}{4}{\parindent}{3.25ex plus 1ex minus
.2ex}{-1em}{\normalsize\bf}}
\setcounter{secnumdepth}{0}

\def\appendix{\par
\setcounter{section}{0}
\setcounter{subsection}{0}
\def\thesection{\Alph{section}}}