@article{ramos_barci_linhares_medeiros neto_2007,  title={Condensation of vortex-strings: effective potential contribution through dual actions},  volume={37},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332007000200015},  DOI={10.1590/S0103-97332007000200015},  number={1b},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Ramos, Rudnei O. and Barci, Daniel G. and Linhares, Cesar A. and Medeiros Neto, J. F.},  year={2007},  month={Mar},  pages={251–257} }