\documentclass[a4paper,10pt]{article} %\usepackage[landscape]{geometry} %\usepackage{lscape} %\usepackage{pdflscape} %\textwidth 16cm %\textheight 10cm %\pagestyle{empty} %\baselineskip 0.8cm %\oddsidemargin -.5cm %\evensidemargin -.5cm %\topmargin -2cm %\usepackage{graphicx} \begin{document} \section{First Section} \subsection{First subsection is related with $\hbar$} Hello world.. Turkish letters: \begin{verbatim} \c{c} \c{C} \u{g} \u{G} {\i} \.{I} \"{o} \"{O} \c{s} \c{S} \"{u} \"{U} \end{verbatim} \c{c} \c{C} \u{g} \u{G} {\i} \.{I} \"{o} \"{O} \c{s} \c{S} \"{u} \"{U} This is an {\bf in-line equation}: ($a_1 = a^2$) And this is a {\large numbered} equation~\cite{Cemal}: \begin{equation} A(x) = \sum_{i=1}^N \int_0^{\infty} x^{i+1} dx \label{my_integral} \end{equation} This is an unnubered {\Huge equation} (completely unrelated to Eqn.\ref{my_integral}but see reference \cite{hwang}): \[ \Psi(x) = \sum_{i=1}^N \int_0^{\infty} x^{i+2} dx \] tiny small large Large huge Huge \begin{thebibliography}{9} \bibitem{hwang} K.~Hwang, B.~Schmittmann, and R.K.P.~Zia, Phys.~Rev.~E, {\bf 48}, 800 (1993). \bibitem{Cemal} K. Hwang, B. Schmittmann, and R.K.P. Zia, Phys. Rev. E, {\bf 48}, 800 (1993). \end{thebibliography} \end{document}