Alla fine ho risolto scaricando la citazione direttamente dal sito della rivista.
Ora nel file .bbl ho:
`
\providecommand{\bysame}{\leavevmode\hbox to3em{\hrulefill}\thinspace}
\providecommand{\MR}{\relax\ifhmode\unskip\space\fi MR }
% \MRhref is called by the amsart/book/proc definition of \MR.
\providecommand{\MRhref}[2]{%
\href{http://www.ams.org/mathscinet-getitem?mr=#1}{#2}
}
\providecommand{\href}[2]{#2}
\begin{thebibliography}{1}
\bibitem{Montecarlo_3d}
Helmut~G. Katzgraber, Mathias K\”orner, and A.~P. Young, \emph{Universality in
three-dimensional ising spin glasses: A monte carlo study}, Phys. Rev. B
\textbf{73} (2006), no.~22, 224432.
\bibitem{Nobre_2d}
Fernando~D. Nobre, \emph{Phase diagram of the two-dimensional
$\ifmmode\pm\else\textpm\fi{}j$ ising spin glass}, Phys. Rev. E \textbf{64}
(2001), no.~4, 046108.
\bibitem{WB_Ising}
Octavio~R. Salmon, Bráulio~T. Agostini, and Fernando~D. Nobre, \emph{Ising
spin glasses on wheatstone-bridge hierarchical lattices}, Physics Letters A
\textbf{374} (2010), no.~15-16, 1631 — 1635.
\end{thebibliography}
`
…e tutto funziona bene. Anche se non ho capito perch\`e prima non andava.