Plane-wave UTD-PO formulation for multiple-plateau diffraction analysis assuming negative incidence angles - Lorente-López, J.; Rodríguez, J.-V.; Martínez-Inglés, M.-T.; Garcia-Pardo, J.-M.M.; Tayebi, A.; Gómez, J.; Juan-Llácer, L.; Rodríguez-Rodríguez, I. (AEU - International Journal of Electronics and Communications, 2023)