% LaTeX-2e; 12pp. Amsmath, XY.
\documentclass{hha}

\usepackage{amsmath}
\usepackage{xy}


\begin{document}
%
\title{Title of Article}          % Title of Document


\author{First Author}             % First Author
\email{fauthor@some.domain}       % First Author's email
\address{Mathematics Department\\ % First Author's postal address
         Some University\\
         Country\\
         City\\
         Address}

\author{Second Author}            % Second Author
\email{sauthor@some.domain}       % Second Author's email
\address{Some Department\\ 	  % Second Author's postal address
         Other University\\
         Country\\
         City\\
         Address}


% AMS 2000 Mathematics Subject Classification
\classification{ABC123}

% Keywords of the article
\keywords{Homology, Homotopy}

% Abstract comes before maketitle
\begin{abstract}
% Abstract text 
\end{abstract}


\received{Day Month Year}   % receive date (for example: 11 October 1999)
\revised{Day Month Year}    % receive date
\published{Day Month Year}  % publish date
\submitted{Name of Editor}  % Name of Journal's Editor, who submitted Article 

\volumeyear{2000} % Volume Year
\volumenumber{1}  % Volume Number 
\issuenumber{2}   % Issue Number

\startpage{1}     % PageNumber of first page


\maketitle


% Text of Document.


\end{document}