\ifx\undefined\documentclass% LaTeX 2.09
\let\@pti@ns=\@options\def\@options{\@pti@ns\def\@ptsize{2}}
\input article.sty\relax
\else% LaTeX 2e
\@fileswithoptions\@clsextension[12pt]{article}
\fi%
\pagestyle{empty}
\global\font\egtmib=cmmib10 scaled 800
\outer\def\proclaim #1:#2\par{\medbreak\vbox{
  \hbox{\bf#1:}\fboxsep=3mm\vskip2mm\noindent\hskip8.75mm
  \fbox{\everymath{\displaystyle}\parbox{.9\textwidth}{#2}}}\par
  \ifdim\lastskip<\medskipamount \removelastskip\penalty55\medskip\fi}
\outer\def\definitie #1:#2\par{\medbreak\noindent
  {\bf#1:\enspace}#2\par
  \ifdim\lastskip<\medskipamount \removelastskip\penalty55\medskip\fi}
\outer\def\proof #1\par{\medbreak\noindent
  {\it Proof:\enspace}#1\nobreak\enspace\nobreak\rule{1ex}{1ex}\par
  \ifdim\lastskip<\medskipamount \removelastskip\penalty55\medskip\fi}
\newcounter{figuur}
\outer\def\figuur#1#2{\refstepcounter{figuur}
  \edef\@currentlabel{\thefiguur}\par\vskip-6mm\vbox{
  \begin{center}#2\end{center}\vskip-2mm%
  \centerline{\underline{Fig.~\arabic{figuur}.~~#1.}}}%
  \ifdim\lastskip<\medskipamount \removelastskip\penalty55\vskip3mm\fi}
\newcounter{tabel}
\outer\def\tabel#1#2{\refstepcounter{tabel}
  \edef\@currentlabel{\thetabel}\par\vskip4mm\vbox{
  \centerline{\underline{Table~\arabic{tabel}.~~#1.}}%
  \kern-6mm\begin{center}#2\end{center}}%
  \ifdim\lastskip<\medskipamount \removelastskip\penalty55\vskip-2mm\fi}
%
\let\@normalsize\normalsize
\input{setspace.sty}\onehalfspacing\def\baselinestretch{1.20}
%was: \input{doublespace.sty}\setstretch{1.22} % interlinie slechts  x 1.22
\edef\@@listi{\@listi\noexpand\advance\noexpand\itemsep -8pt}
\let\Document\document
\gdef\document{\Document\let\@listi\@@listi}
%
\let\epsilon=\varepsilon\let\phi=\varphi\let\rho=\varrho
\mathchardef\emptyset="001F   % Class 0 (ordinary), family 0 (roman), symbol \O
\def\binom#1#2{\hbox{$#1 \choose #2$}}
%\@ifundefined{twlmib}{\global\font\twlmib\@mbi\@magscale1\global
%\font\twllyb\@lasyb\@magscale1\global\font\twlsyb\@mbsy\@magscale1\relax}{}
%\def\vect#1{\hbox{\textfont0\twlmib\textfont\@ne\twlmib\textfont\tw@\twlsyb$\mit#1$}}
\def\vect#1{{\bf#1}}
\def\vects#1{{\scriptsize\bf#1}}
\def\mod{{\rm mod~}}
%
\def\thebibliography#1{\medskip\noindent{\footnotesize\bf REFERENCES\markboth
 {REFERENCES}{REFERENCES}}\list
 {[\arabic{enumi}]}{\settowidth\labelwidth{[#1]}\leftmargin\labelwidth
 \advance\leftmargin\labelsep\usecounter{enumi}}
 \def\newblock{\hskip .11em plus .33em minus -.07em}\sloppy
 \parskip=1.9mm plus 1mm minus 1mm\relax\sfcode`\.=1000\relax}
%
\setcounter{secnumdepth}0
\def\section#1{\@startsection{section}{1}{0pt}{12pt plus 6pt minus 2pt
 }{8pt plus 4pt minus 1pt}{\footnotesize\bf}{\uppercase{#1}}}
%
\font\ssbx=cmssbx10 scaled 1440 % was: scaled 1200
\def\title#1{\gdef\@title{\uppercase{#1}}}
\def\maketitle{\par \begingroup
 \def\thefootnote{\fnsymbol{footnote}}\footnotesep=5.2mm
 \long\def\@makefntext##1{\noindent\llap{\hss$^{\@thefnmark}$~}##1}
 \@maketitle \endgroup
 \setcounter{footnote}{0} \let\maketitle\relax \let\@maketitle\relax
 \gdef\@thanks{}\gdef\@author{}\gdef\@title{}\let\thanks\relax}
\def\@maketitle{\begin{center}\ssbx\uppercase{\@title}\end{center}\medskip
 \noindent\@author\medskip\par}
\def\abstract{\begingroup\leftskip=11mm\parindent=0pt\parskip=0pt\relax\em}
\def\endabstract{\par\endgroup}
%
\textwidth 145 mm
\textheight220 mm
\topmargin-8mm
\oddsidemargin10mm
\evensidemargin10mm
\def\medskip{\vskip 12pt plus 4pt minus 2pt\relax}
\parskip=0pt plus 6pt
\parindent=21pt