@article{10_21136_AM_2024_0157_23,
     author = {Zhou, Yi and Zhang, Bin},
     title = {Ridge estimation of covariance matrix from data in two classes},
     journal = {Applications of Mathematics},
     pages = {169--184},
     publisher = {mathdoc},
     volume = {69},
     number = {2},
     year = {2024},
     doi = {10.21136/AM.2024.0157-23},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.2024.0157-23/}
}