Fermionic vacuum polarization in compactified cosmic string spacetime S. Bellucci, E. R. Bezerra de Mello, A. de Padua and A. A. Saharian Eur. Phys. J. C, 74 1 (2014) 2688 Published online: 23 January 2014 DOI: 10.1140/epjc/s10052-013-2688-z