%%
%% The LaTeX Companion, 3ed
%%
%% Example 16-2-16 on page II-482 in "Citations with superscript numbers".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{111.0pt}

%% Some settings for the look of the example in the book:
\sloppy
\setlength\parindent{0pt}
%% Do not show the bibliography itself in the example,
%% so put it on a separate page:
\AtEndDocument{\newpage\bibliography{tlc}}

%StartShownPreambleCommands
\usepackage[super]{cite}
\bibliographystyle{plain}
%StopShownPreambleCommands

\begin{document}
et al.\@ \cite{LGC97}.  \hfil   et al.\ \cite{LGC97}.

U.S.A. \cite{unknown}.  \hfil   U.S.A\@. \cite{unknown}.
\end{document}
