Planar degeneracy of the three-gluon vertex A. C. Aguilar, M. N. Ferreira, J. Papavassiliou and L. R. Santos Eur. Phys. J. C, 83 6 (2023) 549 Published online: 29 June 2023 DOI: 10.1140/epjc/s10052-023-11732-3