Moments of a linear operator, with applications to the trace of the inverse of matrices and the solution of equations. - Claude Brezinski; Paraskevi Fika; Marilena Mitrouli (Numer. Linear Algebra Appl., 2012)

Stochastic estimates for the trace of functions of matrices via Hadamard matrices. - Paraskevi Fika; Christos Koukouvinos (Commun. Stat. Simul. Comput., 2017)

Fast estimates for the diagonal of the inverse of large scale matrices appearing in applications. - Paraskevi Fika; Marilena Mitrouli (J. Comput. Appl. Math., 2019)

The e-MoM approach for approximating matrix functionals. - Paraskevi Fika; Marilena Mitrouli; Paraskevi Roupa; Dimitrios Triantafyllou (J. Comput. Appl. Math., 2020)