@article{articleea697536,
title   = {Participation of electronic excited states in the positronium formation mechanism in the Gd(III) pentakis (picrate) complexes with imidazolium countercations},
author = {Fulgêncio, F and Borges, A. S and Araújo, M. H and Brito, Hermi Felinto de and Oliveira, F. C and Ribeiro, T and Windmöller, D and Magalhães, W. F},
year = {2016},
doi = {10.1016/j.jlumin.2015.05.032},
journal   = {Journal of Luminescence}
}