One alternative to using {curly brackets} is this:-
Check your root folder for .bbl file, where .bbl is your BiBteX database, after you run pdflatex for the first time and then run bibtex on your BiBteX database file.bbl.
Open this *.bbl file in an editor of your choice.
The file would look like this:
\begin{thebibliography}{10}
\expandafter\ifx\csname url\endcsname
\relax
\def\url#1{\texttt{#1}}
\fi
\expandafter\ifx\csname urlprefix\endcsname
\relax\def\urlprefix{URL }
\fi
\bibitem{label}.....
Edit this *.bbl file to meet your requirements and now run the pdflatex command on your .tex file. This should give you the desired result.
By this method you can edit the bibliography in any manner. You can even add names with accented characters.