\documentstyle[11pt,osid]{article}

%\documentclass[11pt]{article}             % Use with LaTeX2e
%\usepackage{osid}                         %

\title{The Title of Your Paper}
\author{First Author \\{\footnotesize\it Postal address \& E-mail}\\[2ex]
        Second Author\thanks{Supported by ...}
                     \\{\footnotesize\it Postal address \& E-mail} }

\begin{document}

\maketitle
\begin{abstract}
     An abstract of no more than 200 words is required.
     Preferably it should consist of a single paragraph.
     Avoid formulae and citations in the abstract.
\end{abstract}


\section{Introduction}

All standard \LaTeX\ commands are OK.  Citations are best handled with the
use of \cite{paper} or \cite{book,in-proc} commands.
Labelling and referencing within the text is also best done using automatic
mechanisms of \LaTeX, like
\begin{equation} \label{EQ1}
   E=mc^2.
\end{equation}
Equation~(\ref{EQ1}) can be now referred to symbolically.

\section{The second section}

Two environments are predefined: first one for typesetting definitions
and examples, and the second one --- for theorems, propositions, lemmas,
colloraries, and conjectures.  The examples of their use are:
\begin{definition}{Definition}
   Here goes the text of the definition.  Definitions and theorems are
   numbered automatically and can be referred to just like equations,
   e.g.\ here is the reference to the Theorem~\ref{TH1} below.
\end{definition}
Unlike definitions and examples, theorems and such are automatically
typeset in italics.
\begin{theorem}{Theorem} \label{TH1}
   The text of the theorem.
\end{theorem}
Observe the role of the parameters ``Definition'', ``Theorem'', etc.,
which become appropriate captions in the text.
\begin{theorem}{Lemma}
   The text of the lemma.
\end{theorem}

\subsection{Typesetting proofs of theorems}

Proofs of theorems should be clearly separated from the surrounding text,
e.g.\ the end of a proof can be marked with a box.  \rule{5pt}{5pt}

\section{Additional technical remarks}

\begin{itemize}

\item  In your source file avoid lines exceeding 80 characters.
The file will be reformated by us and short lines make our work easier.

\item  While typing formulae insert logical breaks (spaces, new lines): do
not type a long formula as a single long string. For example,
\begin{equation}
\Phi(\beta,\omega)  =
   \sum_{m=0}^{\infty} \sum_{n=0}^{m} A_n^m(\omega)\,e^{-i\beta n}\,.
\end{equation}

\item  Your paper will eventually be processed along with other ones as a
single LaTeX job. Therefore, when defining private macros avoid names likely
to be repeated in other papers. A typical example is \verb+\be+ often used
as a replacement for \verb+\beta+ but also as an abbreviation for
\verb+\begin{equation}+.

\item  The use of \verb+\quad+ and \verb+\qquad+ commands is recommended
for the horizontal separation of formulae, e.g.
$$  x^n+y^n=z^n\,,  \qquad   n\ge 3\,.  $$
Moreover, observe punctuation rules in formulae just as in ordinary sentences.

\end{itemize}

Finally, an example below shows 4 typical bibliographic entries as used
in OSID.

\begin{thebibliography}{99}

\bibitem{paper} J. Moser, Adv.\ Math.\ {\bf 16}, 160 (1975).

\bibitem{book} V. I. Arnold, {\em Mathematical Methods of Classical
               Mechanics\/}, 2nd ed., Springer, New York 1989.

\bibitem{many-authors} Y. Choquet-Bruhat, C. DeWitt-Morette and
              M. Dillard-Bleick, {\em Analysis, Manifolds and Physics\/},
              North Holland, Amsterdam 1982.

\bibitem{in-proc} A. G. Reyman, {\em Group Theoretical Methods in
                  the Theory of Finite-Dimensional Integrable Systems\/},
                  in Dynamical Systems~VII,
                  V.~I.~Arnold and S.~P.~Novikov eds., EMS vol.~16,
                  Springer, New York 1994.

\end{thebibliography}

\end{document}

S.~P.~Novikov eds., EMS vol.~16,
                  Springer, New York 1994.

\end{thebibliography}

\end{document}

