Eight-dimensional real quadratic division algebras. Dieterich, Ernst (2000) AMA. Algebra Montpellier Announcements [electronic only]
Eine Faktorisierung der bei der rationalen Interpolation auftretenden Matrizen. H. Werner (1971/1972) Numerische Mathematik
Erratum. Factorization Iterative Methods, M-operators and H-Operators. (Num. Math. 31, 335-357 (1979)). R. Beauwens (1986) Numerische Mathematik
Erratum to On feebly nil-clean rings Marjan Sheibani Abdolyousefi, Neda Pouyan (2024) Czechoslovak Mathematical Journal
Explicit polar decomposition of companion matrices. van den Driessche, Pauline, Wimmer, Harald K. (1996) ELA. The Electronic Journal of Linear Algebra [electronic only]
Explicit polar decomposition of complex matrices. Horn, Roger A., Piazza, Giuseppe, Politi, Tiziano (2009) ELA. The Electronic Journal of Linear Algebra [electronic only]