f(R) global monopole revisited Thiago R. P. Caramês, Júlio C. Fabris, E. R. Bezerra de Mello and H. Belich Eur. Phys. J. C, 77 7 (2017) 496 Published online: 25 July 2017 DOI: 10.1140/epjc/s10052-017-5057-5