Occorsio, Donatella. “Bernstein Polynomials of Matrices”.
Rev. Anal. Numér. Théor. Approx.
, vol. 22, no. 1, Feb. 1993, pp. 73-82,
https://ictp.acad.ro/jnaat/journal/article/view/1993-vol22-no1-art7
.