\documentclass{article}

\textheight 19cm
\textwidth 11.5cm
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\usepackage{graphicx}
\input amssym.def
\input amssym
\usepackage[margin=10pt,font=small,labelfont=bf,labelsep=period]{caption}
\usepackage{float}

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\usepackage{titlesec}
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\setlength{\parindent}{1.25cm}

\begin{document}

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%%%%%%%%%%% TITLE, AUTHORS, ADRESSES %%%%%%%%%
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\vspace*{12.636mm}
\centerline{\Large{\bf THE TITLE; ALL CAPS}}

\vspace*{6.318mm}
\centerline{{\normalsize Author1$^{1}$, Author2$^{2}$ and Author3$^{3}$}}
\vspace*{3.51mm}
\centerline{{\it {\normalsize $^{1}$Adress1}}} 

\centerline{{\it {\normalsize $^{2}$Adress2}}}
\vspace*{6.318mm}

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%%%%%%%%%%%%%%%% ABSTRACT %%%%%%%%%%%%%%%%%%%%
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\noindent{\bf Abstract.} Abstracts of Invited lectures and Progress reports should be on one page. Contributed papers prepared for poster presentation are up to four pages. Below, detailed description of text preparation is given. All manuscripts must be submitted in English. Manuscripts should consist of the title, followed by author(s) name(s) and addresse(s), abstract, body of the text and the list of the references. Authors should not include references in Abstracts.

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%%%%%%%%%%%%%%% SECTIONS %%%%%%%%%%%%%%%%%%%%
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\section{ SUBTITLES}

Subtitles should be All Caps and are automatically numbered. The first line of the paragraph is indented 1.25 cm.

Example of sub-subtitles is given here.


\subsection{ Sub-subtitle}

Only the first letter of the sub-subtitle is capital.

\section{ EQUATIONS}

Equations are automatically numbered sequentially throughout your
contribution using arabic numerals in parentheses on the right-hand
side. Use italic letters to denote variables (in text or in displayed equations). Please use a decimal point rather than a comma in numbers (i.e. 3.142 not 3,142).

\begin{equation}
\omega = N_{\mbox{e}}f(t)\alpha_1 \chi ^{-c} \enspace .
\end{equation}

\noindent Equations can be referred in text as Eq. (1) or Equation (1).

\subsection{ General Rules for Coding Formulas}
%

When you are working in math mode everything is typeset in italics.
Sometimes you need to insert non-mathematical elements (e.g.\
words or phrases). Such insertions should be coded in roman
(with \verb|\mbox|) as illustrated in the following example:
\begin{flushleft}
{\itshape Sample Input}
\end{flushleft}
\begin{verbatim}
\begin{equation}
  \left(\frac{a^{2} + b^{2}}{c^{3}} \right) = 1 \quad
  \mbox{ if } c\neq 0 \mbox{ and if } a,b,c\in {\Bbb R} \enspace .
\end{equation}
\end{verbatim}
{\itshape Sample Output}
\begin{equation}
  \left(\frac{a^{2} + b^{2}}{c^{3}} \right) = 1 \quad
  \mbox{ if } c\neq 0 \mbox{ and if } a,b,c\in {\Bbb R} \enspace .
\end{equation}

If you wish to start a new paragraph immediately after a displayed
equation, insert a blank line so as to produce the required
indentation. If there is no new paragraph either do not insert
a blank line or code \verb|\noindent| immediately before
continuing the text.

Please punctuate a displayed equation in the same way as other
ordinary text but with an \verb|\enspace| before end punctuation.

Note that the sizes of the parentheses or other delimiter
symbols used in equations should ideally match the height of the
formulas being enclosed. This is automatically taken care of by
the following \LaTeX{} commands:\\[2mm]
\verb|\left(| or \verb|\left[| and
\verb|\right)| or \verb|\right]|.
%
\subsection{ Italic and Roman Type in Math Mode}
%
\begin{enumerate}
\item
In math mode \LaTeX{} treats all letters as though they
were mathematical or physical variables, hence they are typeset as
characters of their own in italics. However, for certain components
 of formulas, like short texts,this would be incorrect and therefore
coding in roman is required. Roman should also be used for
subscripts and superscripts {\em in formulas\/} where these are
merely labels and not in themselves variables,
e.g. $T_{\mathrm{eff}}$ \emph{not} $T_{eff}$,
$T_{\mathrm K}$ \emph{not} $T_K$ (K = Kelvin),
$m_{\mathrm e}$ \emph{not} $m_e$ (e = electron).
However, do not code for roman
if the sub/superscripts represent variables,
e.g.\ $\sum_{i=1}^{n} a_{i}$.
\item
Please ensure that {\em physical units\/} (e.g.\ pc, erg s$^{-1}$
K, cm$^{-3}$, W m$^{-2}$ Hz$^{-1}$, m kg s$^{-2}$ A$^{-2}$) and
{\em abbreviations\/} such as Ord, Var, GL, SL, sgn, const.\
are always set in roman type. To ensure
this use the \verb|\mathrm| command: \verb|\mathrm{Hz}|.
The names of common mathe\-matical functions, such as log, sin, exp, max and sup should be coded as \verb|\log|,
\verb|\sin|, \verb|\exp|, \verb|\max|, \verb|\sup|
and will appear in roman automatically.
\item
Chemical symbols and formulas should be coded for roman,
e.g.\ Fe not $Fe$, H$_2$O not {\em H$_2$O}.
\item
Familiar foreign words and phrases, e.g.\ et al.,
a priori, in situ, brems\-strah\-lung, eigenvalues should not be
italicized.
\end{enumerate}

\section{ FIGURES}

Figure environments should be inserted after (not in)
the  paragraph in which the figure is first mentioned.
They will be numbered automatically.

Preferably the images should be enclosed as .eps files.

The lettering should be suitable for reproduction, and after a
probably necessary reduction the height of capital letters should be at
least 1.8\,mm and not more than 2.5\,mm.
Check that lines and other details are uniformly black and
that the lettering on figures is clearly legible.

Color drawings and color photos are not acceptable. Figures should be followed by Figure caption as it is given in the example below.

\begin{figure}[htb]
\centering
\includegraphics[width=10cm]{Graph.eps}
\caption{Figure caption.}
%\label{figure}
\end{figure}

 Figures can be referred in the text as Fig. 1 or Figure 1. The paragraph before figure is spaced 6 pt ``after".

\section{ TABLES}

Tables should be inserted in the text with the table caption above and centered. Table layout is given bellow. The paragraph before table is spaced 6 pt ``after".

\begin{table}[htbp]
\caption{Table caption. }
\centering
\begin{tabular}{ccccc}
\hline\noalign{\smallskip}
$N_{\mbox{e}}$ (m$^{-3}$) & $T_{\mbox{e}}$ (K) & $W_{\mbox{meas}}\,$(nm) & $d_{\mbox{meas}}\,$(nm) & Ref.\\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
$5\cdot 10^{16}$  & 10000 & 2.05 & 1.10 & [1] \\
$2\cdot 10^{17}$  & 17000 & 3.10 & 1.78 & [5] \\
\hline
\end{tabular}
\end{table}

Paragraph after the table should be spaced 6 pt ``Before". Cells are ``centered". Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. 

\vspace{12pt}
\noindent{\bf Acknowlendgements}
\vspace{12pt}

\noindent
Without indentation.

\noindent This work is partially supported by our Ministry under the grant NO 12345. 

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%%%%%%%%%%%%%%% REFERENCES %%%%%%%%%%%%%%%%%%%
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\section{ REFERENCES}

References must be numbered in the order in which they are referred to in the text: e.g. S. Wagner [1] or [1]. In the text, such abbreviations as Ref. [4] or Refs. [7-10] may be used. The full references should be listed in the numerical order of citation in the text at the end of the article. Examples:

\renewcommand{\refname}{\large REFERENCES}

\begin{thebibliography}{99}

\bibitem[1]{.} S. Autler and C. H. Townes, Phys. Rev. A 10, 489 (1982). - for articles
\bibitem[2]{.} E. U. Shirley, {\it The Theory of Molecules}, p. 399, (The University Press, Cambridge, 1954). - for books
\bibitem[3]{.} C. E. Moore, ``Selected Tables of Atomic Spectra", NSRDS-NBS3, Setion 5, National Bureau of Standards, Washington, DC 20025 (1975). - for reports.
\bibitem[4]{.} http://www.spig2012.pmf.uns.ac.rs - for web pages
\end{thebibliography}

\end{document}