@conference {moran2017direct, title = {Direct computation of parabolic waveguide modes via a bivariate root-finding algorithm}, booktitle = {Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO), 2017 IEEE MTT-S International Conference on}, year = {2017}, pages = {152{\textendash}154}, publisher = {IEEE}, organization = {IEEE}, author = {Mor{\'a}n-L{\'o}pez, Ana and J C{\'o}rcoles and Ruiz-Cruz, Jorge A and Montejo-Garai, Jos{\'e} R and Rebollar, Jes{\'u}s M} }