A Logarithmic Minimization Property of the Unitary Polar Factor in the Spectral and Frobenius Norms. - Patrizio Neff; Yuji Nakatsukasa; Andreas Fischle (SIAM J. Matrix Anal. Appl., 2014)

Explicit Global Minimization of the Symmetrized Euclidean Distance by a Characterization of Real Matrices with Symmetric Square. - Patrizio Neff; Andreas Fischle; Lev Borisov (SIAM J. Appl. Algebra Geom., 2019)