Note about the parallel projection method for solution of system of linear algebraic equations Fridrich Sloboda (1974) Acta Universitatis Carolinae. Mathematica et Physica
Note on a splitting approach to ill-conditioned least squares problems Robert J. Plemmons (1975) Czechoslovak Mathematical Journal
Numerical Solution of Linear Equations with Toeplitz and Vector Toeplitz Matrices. E.H. BAREISS (1969) Numerische Mathematik