@article{silva_venegas_ahumada_2010,  title={Injectivity of the Dirichlet-to-Neumann Functional and the Schwarzian Derivative},  volume={82},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652010000400003},  DOI={10.1590/S0001-37652010000400003},  number={4},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Silva, Fernando A.F.C. and Venegas, Pedro A.G. and Ahumada, Ramón O.M.},  year={2010},  month={Dec},  pages={813–822} }