\documentclass{article}
\usepackage{bnaic}


%% if your are not using LaTeX2e use instead
%% \documentstyle[bnaic]{article}

%% begin document with title, author and affiliations

\title{BNAIC\\ Instructions to Authors}
\author{First author \affila \and
    Second author \affilb \and
    Third author \affila}
\date{\affila\ University of Franeker, P.O.Box 1234 1879AE Franeker\\
    \affilb\ The Company Ltd. P.O.Box 4321 Antwerp}

\pagestyle{empty}

\begin{document}
\ttl
\thispagestyle{empty}

\begin{abstract}
This is the abstract of my paper.
This is the abstract of my paper.
This is the abstract of my paper.
This is the abstract of my paper.
This is the abstract of my paper.
This is the abstract of my paper.
This is the abstract of my paper.
This is the abstract of my paper.
This is the abstract of my paper.
This is the abstract of my paper.
This is the abstract of my paper.
This is the abstract of my paper.
\end{abstract}


\section{The BNAIC Package}

The \verb+bnaic.sty+ file is a package that is to be used together with
the standard \verb+article+ document class.


\section{The Title}

The title of the article is defined in the usual way, with \verb+\title+. For
the authors and their affiliations, three cases are distinguished:

\begin{itemize}
\item One author: define the author with \verb+\author+ and the affiliation
   with \verb+\date+.
\item Multiple authors, all with the same affiliation: define the authors with
   \verb+\author+, separated by \verb+\and+, and the affiliation with
   \verb+\date+.
\item Multiple authors, multiple affiliations: define the
   authors with \verb+\author+. Put after each name a letter for the
   affiliation, generated by \verb+\affila+, \verb+\affilb+, etc. On the
   next lines: one affiliation per line, each preceded by the appropriate letter
   generated by \verb+\affila+, \verb+\affilb+. See the title of this document.
\end{itemize}


\section{The abstract}

Put the abstract before the first section with the \verb+abstract+
environment.


\section{Sections and paragraphs}

  Use the usual \verb+\section+, \verb+\subsection+, and
  \verb+\subsubsection+ command for formatting section heads.

  Do not leave extra space between paragraphs.


  \subsection{A Subsection Heading}


  \subsubsection{A Subsubsection Heading}


  \section{Making References}

  Make references in the running text with the \verb+\cite+
  command \cite{dijkstra68}. Multiple referrences go like this
  \cite{charniak85,steels98}.


\bibliographystyle{plain}
\bibliography{mybibfile}



\end{document}