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\begin{document}

\titleart{TITLE OF ARTICLE}

\autorart{ First name Last name of the first author \index{Last
name Initials.}, First name Last name of the second author
\index{Last name Initials.}}

\coord{ Affiliation, Country for the first author, \\ Affiliation,
Country for the second author} \mail{E-mail: e@mail, e e@mail}

% \addc{Initials. Last name of the first author, Initials. Last name of the second author}{ Title of article}
% \stopcr

\medskip

Text of the abstract ...

An example of a theorem (lemma):

{\bf Theorem 1.} {\it The formulation of the theorem.}

Text of the abstract ...

An example of a formula:

$$
a^2  + b^2 = c^2.
$$

\medskip

{\small \centerline{\bf References:}
\smallskip

\noindent 1. Initials. Name of author. Title of the article. {\it
Title of the Journal}, {\bf number of issue} (Year), XX--YY.

\noindent 2. Initials. Name of author. {\it Title of the book}.
Publishing House, Place, Year.

}

\end{document}
