Parity singlets and doublets of massive spin-3 particles in D = 2 + 1 via Noether gauge embedding D. Dalmazi, E. L. Mendonça and A. L. R. dos Santos Eur. Phys. J. Plus, 134 8 (2019) 387 Published online: 12 August 2019 DOI: 10.1140/epjp/i2019-12762-3