Characters and group invariant polynomials of (super)fields: road to “Lagrangian”Upalaparna Banerjee, Joydeep Chakrabortty, Suraj Prakash and Shakeel Ur RahamanEur. Phys. J. C, 80 10 (2020) 938DOI: https://doi.org/10.1140/epjc/s10052-020-8392-x