1. [AF] T.M. Adams and N.A. Friedman, Staircase mixing, Ergod. Th. & Dynam. Sys., to appear.
2. On the mean ergodic theorem for subsequences;Blum, J. R.;Bull. Amer. Math. Soc.,1960
3. The maximal spectral type of a rank one transformation;Choksi, J. R.;Canad. Math. Bull.,1994
4. Van Nostrand Reinhold Mathematical Studies, No. 29;Friedman, Nathaniel A.,1970
5. Mixing on sequences;Friedman, Nathaniel A.;Canad. J. Math.,1983