Convergence of non-periodic infinite products of orthogonal projections and nonexpansive operators in Hilbert space. - Evgeniy Pustylnik; Simeon Reich; Alexander J. Zaslavski (J. Approx. Theory, 2012)

Infinite products of arbitrary operators and intersections of subspaces in Hilbert space. - Evgeniy Pustylnik; Simeon Reich (J. Approx. Theory, 2014)