Holanda , L.M., P.G. Pagliuso, C. Rettori, S. Nakatsuji, e K. Kuga. 2011. “Eletron Spin Resonance (ESR) Experiments of Fe-Doped YbAlB4 Heavy Fermion Compounds ”. Physicae Proceedings 1 (1). Campinas, SP:1-1. https://econtents.bc.unicamp.br/eventos/index.php/phyproceedings/article/view/3288.