On the bilinear covariants associated to mass dimension one spinors J. M. Hoff da Silva, C. H. Coronado Villalobos, R. J. Bueno Rogerio and E. Scatena Eur. Phys. J. C, 76 10 (2016) 563 Published online: 20 October 2016 DOI: 10.1140/epjc/s10052-016-4408-y