Application of the 3-loop FlexibleEFTHiggs method to the MSSM and the NMSSMThomas Kwasnitza, Dominik Stöckinger, Alexander Voigt and Johannes WünscheEur. Phys. J. C, 86 6 (2026) 590DOI: https://doi.org/10.1140/epjc/s10052-026-15750-9