Choque-Rivero, A. E., and B. E. Medina-Hernandez. “On Two Resolvent Matrices of the Truncated Hausdorff Matrix Moment Problem”. Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics, Vol. 95, July 2022, pp. 4-22, doi:10.26565/2221-5646-2022-95-01.