One-loop conformal anomaly in an implicit momentum space regularization framework A. R. Vieira, J. C. C. Felipe, G. Gazzola and Marcos Sampaio Eur. Phys. J. C, 75 7 (2015) 338 Published online: 18 July 2015 DOI: 10.1140/epjc/s10052-015-3561-z