Strange products of projections

I. Amemiya and T. Ando, Convergence of random products of contractions in Hilbert space, Acta Sci. Math. (Szeged) 26 (1965), 239–244.

I. Halperin, The product of projection operators, Acta Sci. Math. (Szeged) 23 (1962), 96–99.

H. S. Hundal, An alternating projection that does not converge in norm, Nonlinear Anal. 57 (2004), 35–61.

E. Kopecká, Spokes, mirrors and alternating projections, Nonlinear Anal. 68 (2008), 1759–1764.

E. Kopecká and V. Müller, A product of three projections, Studia Math. 223 (2014), 175–186.

E. Kopecká and S. Reich, A note on the von Neumann alternating projections algorithm, J. Nonlinear Convex Anal. 5 (2004), 379–386.

E. Matoušková and S. Reich, The Hundal example revisited, J. Nonlinear Convex Anal. 4 (2003), 411–427.

A. Paszkiewicz, The Amemiya–Ando conjecture falls, arXiv:1203.3354.

M. Práger, Über ein Konvergenzprinzip im Hilbertschen Raum, Czechoslovak Math. J. 10 (1960), 271–282, in Russian.

M. Sakai, Strong convergence of infinite products of orthogonal projections in Hilbert space, Appl. Anal. 59 (1995), 109–120.

J. von Neumann, On rings of operators. Reduction theory, Ann. of Math. 50 (1949), 401–485.