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\bibitem{Doria_etal2008} {\textquotedblleft}\textit{Domain coexistence of magnetism and superconductivity : appearance of confined vortex loops}{\textquotedblright}. Doria MM, de Romaguera ARC, Milo{\v s}evi{\'c} MV, Peeters FM, Journal of physics : conference series \textbf{97}, 012070 (2008).   http://doi.org/10.1088/1742-6596/97/1/012070

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