Ho compilato con pdfLaTeX questo codice
`\documentclass[a4paper,11pt]{article}
\usepackage[usenames,dvipsnames]{pstricks}
\usepackage[centerlast,footnotesize]{subfigure}
\usepackage[italian,english]{babel}
\usepackage{array,microtype,graphicx,amsmath,amssymb,enumerate,,pst-plot}
\usepackage{natbib}
\usepackage{hyperref}
\hypersetup{
pdfstartview = FitH,
colorlinks = true,
linkcolor = blue,
urlcolor = blue,
citecolor = blue,
linktocpage=true
}
\hyphenation{Ca-ma-gni Bec-cat-ti-ni}
\begin{document}
See the works by~\citep{knuth:dummy} and by~\citep{camagni:elementi}.
See the works by~\citep{knuth:dummy} and by~\citep{camagni:elementi}.
See the works by~\citep{knuth:dummy} and by~\citep{camagni:elementi}.
See the works by~\citep{knuth:dummy} and by~\citep{camagni:elementi}.
See the works by~\citep{knuth:dummy} and by~\citep{camagni:elementi}.
See the works by~\citep{knuth:dummy} and by~\citep{camagni:elementi}.
See the works by~\citep{knuth:dummy} and by~\citep{camagni:elementi}.
See the works by~\citep{knuth:dummy} and by~\citep{camagni:elementi}.
See the works by~\citep{knuth:dummy} and by~\citep{camagni:elementi}.
See the works by~\citep{knuth:dummy} and by~\citep{camagni:elementi}.
\bibliographystyle{plainnat}
\bibliography{Bibliografia}
\end{document}
`
dove Bibliografia.bib è
`@BOOK{camagni:elementi,
AUTHOR = {Camagni, Tizio and Becattini, Caio},
TITLE = {Questo è un titolo di fantasia},
PUBLISHER = {Zanichelli},
YEAR = {2099},
ADDRESS = {Bologna}
}
@MANUAL{knuth:dummy,
AUTHOR = {Knuth, Donald and Lamport, Leslie},
TITLE = {This is a dummy title},
YEAR = {1492},
NOTE = {\url{http://www.ctan.org/tex-archive/info/italian/lshort/itlshort.pdf}}
}
`
e i nomi vengono spezzati benissimo.
Difficile dirti di più senza un documento minimale che riproduce il problema.
Ciao,
L.