@article{picco_ruiz_2022,  title={Sparse Estimation of the Precision Matrix and Plug-In Principle in Linear Discriminant Analysis for Hyperspectral Image Classification},  volume={23},  ISSN={2676-0029},  url={https://doi.org/10.5540/tcam.2022.023.03.00595},  DOI={10.5540/tcam.2022.023.03.00595},  number={3},  journal={Trends in Computational and Applied Mathematics},  publisher={Sociedade Brasileira de Matemática Aplicada e Computacional - SBMAC},  author={PICCO, M. L. and RUIZ, M. S.},  year={2022},  month={Jul},  pages={595–605} }