Scaled and square-root elastic net. - Elias Raninen; Esa Ollila (ICASSP, 2017)

Optimal Pooling of Covariance Matrix Estimates Across Multiple Classes. - Elias Raninen; Esa Ollila (ICASSP, 2018)

Optimal Shrinkage Covariance Matrix Estimation Under Random Sampling From Elliptical Distributions. - Esa Ollila; Elias Raninen (IEEE Trans. Signal Process., 2019)

A Comparative Study of Supervised Learning Algorithms for Symmetric Positive Definite Features. - Ammar Mian; Elias Raninen; Esa Ollila (EUSIPCO, 2020)

On the Variability of the Sample Covariance Matrix Under Complex Elliptical Distributions. - Elias Raninen; Esa Ollila; David E. Tyler (IEEE Signal Process. Lett., 2021)

Coupled Regularized Sample Covariance Matrix Estimator for Multiple Classes. - Elias Raninen; Esa Ollila (IEEE Trans. Signal Process., 2021)

Bias Adjusted Sign Covariance Matrix. - Elias Raninen; Esa Ollila (IEEE Signal Process. Lett., 2022)

Linear Pooling of Sample Covariance Matrices. - Elias Raninen; David E. Tyler; Esa Ollila (IEEE Trans. Signal Process., 2022)

Oracle Approximating Shrinkage Covariance Matrix Estimators for Complex Elliptical Distributions. - Elias Raninen (EUSIPCO, 2024)