\documentclass[12pt]{article}
\pagestyle{empty}
\usepackage{amsmath,times,bm}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Do not modify the dimensions of the page
\setlength{\topmargin}{0mm}
\setlength{\headheight}{0mm}
\setlength{\headsep}{0mm}
\setlength{\topmargin}{0mm}
\setlength{\oddsidemargin}{0mm}
\setlength{\textwidth}{125mm}
\setlength{\textheight}{195mm}
\setlength{\parindent}{0pt}
\setlength{\parskip}{12pt}
% Do not modify the dimensions of the page
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}

\begin{center}
%%%%% TITLE %%%%%
\textbf{\large AUTHOR'S INSTRUCTIONS FOR PREPARING  ABSTRACTS }

%%%%% AUTHORS %%%%%
\textbf{
First A. Author$^1$ and Second B. Author$^2$
}

%%%%% AFFILIATIONS %%%%%
$^1$
{\it A. Author Institution\\
Address}\\
author1@first.author

$^2$
{\it B. Author Institution\\
Address}\\
author2@second.author

\end{center}

%%%%% MAIN TEXT %%%%%

The final abstract length should not exceed 1 page. It must
contain (1) the presentation title, (2) names of the authors, and
(3) contact information including authors' postal and e-mail
addresses.  All abstracts must be submitted in electronic form via
the web.

The final abstract is to be prepared using the following format:
\parskip=0pt
\begin{itemize}
\parskip=0pt
\setlength{\parskip}{0pt} \setlength{\itemsep}{0pt}
\item Paper size: B5 (176mm x 250mm)
\item Margins: 25mm margins for left, right, and top, 30mm margin at bottom
\item Title in 14 pt \textbf{Bold}, centered
\item Author names in \textbf{Bold}
\item For LaTeX, 12pt article documentclass (Times fonts are recommended)
\item 1 line spacing between title and authors
\item 1 line spacing between authors and contact information
\item 1 line spacing between affiliations and abstract body
\item 1 line spacing between abstract paragraphs
\item 1 line spacing between abstracts and references
\item No paragraph indents
\item Equations and figures may be included
\end{itemize}

\end{document}