Cloud of strings in ##IMG## [http://ej.iop.org/images/1674-1137/42/6/063105/toc_cpc_42_6_063105_ieqn1.gif] {${{f}}({{R}})$} gravity

J. P. Morais Graça, Iarley P. Lobo and Ines G. Salako
Institute of Physics (IOP)
Published 2018