Andrei Bourchtein. Ellipticity of normal mode initialization equations. Applied Mathematics and Computation, 133(1):193-211, 2002. [doi]
@article{Bourchtein02,
title = {Ellipticity of normal mode initialization equations},
author = {Andrei Bourchtein},
year = {2002},
doi = {10.1016/S0096-3003(01)00230-2},
url = {http://dx.doi.org/10.1016/S0096-3003(01)00230-2},
researchr = {https://researchr.org/publication/Bourchtein02},
cites = {0},
citedby = {0},
journal = {Applied Mathematics and Computation},
volume = {133},
number = {1},
pages = {193-211},
}