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\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}
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\begin{thebibliography}{MT04}

\bibitem[MT04]{MarsdenT2004}
Jerrold~E. Marsden and Anthony~J. Tromba, \emph{C{\'a}lculo {V}ectorial}, 5
  ed., Pearson Education S.A., Madrid, 2004, Cap{\'{\i}}tols 5 i 6.

\bibitem[Pas02]{Pascual2002}
Pere Pascual (ed.), \emph{C{\`{a}}lcul {I}ntegral per a {E}nginyers}, Edicions
  UPC, 2002, Cap{\'{\i}}tols 1, 2, i 3.

\end{thebibliography}
